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1章 4/n=1/a+1/b+1/c
11.解と恒等式の一覧表
4/p=1/a+1/b+1/c, final (2〜47)
p a b c
P A B C
type
2 1 2 2 3n-1 n 3n-1 n(3n-1) B=kP
3 1 4 12 8n-5 2n-1 2(5n-3)(2n-1) 2(8n-5)(5n-3) A, AB, BP
3 1 6 6 4n-1 n 2n(4n-1) 2n(4n-1) A=B or B=C
3 2 2 3 4n-1 2n 2n n(4n-1) A=B or B=C
5 2 4 20 16n-11 2(2n-1) 4(3n-2)(2n-1) 4(16n-11)(3n-2) A, AB, BP
5 2 5 10 3n-1 n 3n-1 n(3n-1) B=kP
7 2 15 210 16n-9 2(2n-1) (34n-19)(2n-1) 2(16n-9)(34n-19) A, AB, BP
7 2 16 112 16n-9 2(2n-1) 4(9n-5)(2n-1) 4(16n-9)(9n-5) A, AB, BP
7 2 18 63 12n-5 3n-1 3(5n-2)(3n-1) 3(12n-5)(5n-2) A, AB, BP
7 2 21 42 11n-4 3n-1 3(11n-4) 3(3n-1)(11n-4) B=kP
7 2 28 28 4n-1 n 2n(4n-1) 2n(4n-1) A=B or B=C
7 3 6 14 16n-9 4n-1 2(2n-1)(4n-1) 2(16n-9)(2n-1) A, AB, BP
7 4 4 14 4n-1 2n 2n n(4n-1) A=B or B=C
11 3 34 1122 24n-13 3(2n-1) 2(37n-20)(2n-1) 6(24n-13)(37n-20) A, AB, BP
11 3 36 396 24n-13 3(2n-1) 6(13n-7)(2n-1) 6(24n-13)(13n-7) A, AB, BP
11 3 42 154 8n-5 2n-1 2(5n-3)(2n-1) 2(8n-5)(5n-3) A, AB, BP
11 3 44 132 15n-4 4n-1 4(15n-4) 4(4n-1)(15n-4) B=kP
11 3 66 66 4n-1 n 2n(4n-1) 2n(4n-1) A=B or B=C
11 4 9 396 32n-21 4(2n-1) (26n-17)(2n-1) 4(32n-21)(26n-17) A, AB, BP
11 4 11 44 3n-1 n 3n-1 n(3n-1) B=kP
11 4 12 33 20n-9 5n-1 (5n-2)(5n-1) (20n-9)(5n-2) A, AB, BP
11 6 6 33 4n-1 2n 2n n(4n-1) A=B or B=C
13 4 18 468 32n-19 4(2n-1) 2(22n-13)(2n-1) 4(32n-19)(22n-13) A, AB, BP
13 4 20 130 24n-11 2(3n-1) 2(9n-4)(3n-1) 2(24n-11)(9n-4) A, AB, BP
13 4 26 52 7n-1 2n 2(7n-1) 2n(7n-1) B=kP
13 5 10 130 40n-27 5(2n-1) 10(3n-2)(2n-1) 10(40n-27)(3n-2) A, AB, BP
17 5 30 510 40n-23 5(2n-1) 10(7n-4)(2n-1) 10(40n-23)(7n-4) A, AB, BP
17 5 34 170 7n-4 2n-1 2(7n-4) 2(2n-1)(7n-4) B=kP
17 6 15 510 48n-31 6(2n-1) 3(14n-9)(2n-1) 6(48n-31)(14n-9) A, AB, BP
17 6 17 102 3n-1 n 3n-1 n(3n-1) B=kP
19 5 96 9120 40n-21 5(2n-1) 2(101n-53)(2n-1) 10(40n-21)(101n-53) A, AB, BP
19 5 100 1900 40n-21 5(2n-1) 10(21n-11)(2n-1) 10(40n-21)(21n-11) A, AB, BP
19 5 114 570 23n-4 6n-1 6(23n-4) 6(6n-1)(23n-4) B=kP
19 5 120 456 8n-5 2n-1 2(5n-3)(2n-1) 2(8n-5)(5n-3) A, AB, BP
19 5 190 190 4n-1 n 2n(4n-1) 2n(4n-1) A=B or B=C
19 6 23 2622 48n-29 6(2n-1) (58n-35)(2n-1) 6(48n-29)(58n-35) A, AB, BP
19 6 24 456 48n-29 6(2n-1) 12(5n-3)(2n-1) 12(48n-29)(5n-3) A, AB, BP
19 6 30 95 16n-13 2(2n-1) 2(4n-3)(2n-1) (16n-13)(4n-3) A, AB, BP
19 6 38 57 7n-2 2n 2(7n-2) n(7n-2) B=kP
19 8 12 456 48n-29 4(3n-1) 3(5n-3)(3n-1) 12(48n-29)(5n-3) A, AB, BP
19 10 10 95 4n-1 2n 2n n(4n-1) A=B or B=C
23 6 139 19182 48n-25 6(2n-1) (290n-151)(2n-1) 6(48n-25)(290n-151) A, AB, BP
23 6 140 9660 48n-25 6(2n-1) 4(73n-38)(2n-1) 12(48n-25)(73n-38) A, AB, BP
23 6 141 6486 48n-25 6(2n-1) 3(98n-51)(2n-1) 6(48n-25)(98n-51) A, AB, BP
23 6 142 4899 36n-13 3(3n-1) (111n-40)(3n-1) 3(36n-13)(111n-40) A, AB, BP
23 6 144 3312 48n-25 6(2n-1) 12(25n-13)(2n-1) 12(48n-25)(25n-13) A, AB, BP
23 6 147 2254 16n-9 2(2n-1) (34n-19)(2n-1) 2(16n-9)(34n-19) A, AB, BP
23 6 150 1725 36n-13 3(3n-1) 3(39n-14)(3n-1) 3(36n-13)(39n-14) A, AB, BP
23 6 156 1196 16n-9 2(2n-1) 4(9n-5)(2n-1) 4(16n-9)(9n-5) A, AB, BP
23 6 161 966 27n-4 7n-1 7(27n-4) 7(7n-1)(27n-4) B=kP
23 6 174 667 16n-9 2(2n-1) 2(20n-11)(2n-1) (16n-9)(20n-11) A, AB, BP
23 6 184 552 31n-8 2(4n-1) 8(31n-8) 8(4n-1)(31n-8) B=kP
23 6 207 414 35n-12 3(3n-1) 9(35n-12) 9(3n-1)(35n-12) B=kP
23 6 230 345 39n-16 2(5n-2) 10(39n-16) 5(5n-2)(39n-16) B=kP
23 6 276 276 4n-1 n 2n(4n-1) 2n(4n-1) A=B or B=C
23 7 42 138 16n-9 4n-1 2(2n-1)(4n-1) 2(16n-9)(2n-1) A, AB, BP
23 8 23 184 3n-1 n 3n-1 n(3n-1) B=kP
23 8 24 138 40n-17 2(5n-1) 2(5n-2)(5n-1) 2(40n-17)(5n-2) A, AB, BP
23 9 16 3312 72n-49 9(2n-1) 2(25n-17)(2n-1) 18(72n-49)(25n-17) A, AB, BP
23 9 18 138 48n-25 3(4n-1) 6(2n-1)(4n-1) 6(48n-25)(2n-1) A, AB, BP
23 10 15 138 48n-25 2(6n-1) 3(2n-1)(6n-1) 6(48n-25)(2n-1) A, AB, BP
23 12 12 138 4n-1 2n 2n n(4n-1) A=B or B=C
29 8 78 9048 64n-35 8(2n-1) 2(86n-47)(2n-1) 8(64n-35)(86n-47) A, AB, BP
29 8 80 2320 48n-19 4(3n-1) 2(33n-13)(3n-1) 4(48n-19)(33n-13) A, AB, BP
29 8 87 696 11n-4 3n-1 3(11n-4) 3(3n-1)(11n-4) B=kP
29 8 88 638 24n-19 2(3n-2) 2(9n-7)(3n-2) 2(24n-19)(9n-7) A, AB, BP
29 8 116 232 15n-1 4n 4(15n-1) 4n(15n-1) B=kP
29 10 29 290 3n-1 n 3n-1 n(3n-1) B=kP
29 11 22 638 88n-59 11(2n-1) 22(3n-2)(2n-1) 22(88n-59)(3n-2) A, AB, BP
31 8 249 61752 64n-33 8(2n-1) (514n-265)(2n-1) 8(64n-33)(514n-265) A, AB, BP
31 8 250 31000 64n-33 8(2n-1) 2(258n-133)(2n-1) 8(64n-33)(258n-133) A, AB, BP
31 8 252 15624 48n-17 4(3n-1) 3(65n-23)(3n-1) 12(48n-17)(65n-23) A, AB, BP
31 8 256 7936 48n-17 4(3n-1) 2(99n-35)(3n-1) 4(48n-17)(99n-35) A, AB, BP
31 8 264 4092 24n-17 2(3n-2) 3(17n-12)(3n-2) 6(24n-17)(17n-12) A, AB, BP
31 8 279 2232 35n-4 9n-1 9(35n-4) 9(9n-1)(35n-4) B=kP
31 8 280 2170 24n-17 2(3n-2) 2(27n-19)(3n-2) 2(24n-17)(27n-19) A, AB, BP
31 8 310 1240 39n-8 2(5n-1) 10(39n-8) 10(5n-1)(39n-8) B=kP
31 8 312 1209 12n-5 3n-1 3(5n-2)(3n-1) 3(12n-5)(5n-2) A, AB, BP
31 8 372 744 47n-16 4(3n-1) 12(47n-16) 12(3n-1)(47n-16) B=kP
31 8 496 496 4n-1 n 2n(4n-1) 2n(4n-1) A=B or B=C
31 9 56 15624 72n-41 9(2n-1) 2(65n-37)(2n-1) 18(72n-41)(65n-37) A, AB, BP
31 9 62 558 7n-4 2n-1 2(7n-4) 2(2n-1)(7n-4) B=kP
31 9 72 248 20n-9 5n-1 (5n-2)(5n-1) (20n-9)(5n-2) A, AB, BP
31 10 35 2170 80n-49 10(2n-1) 5(18n-11)(2n-1) 10(80n-49)(18n-11) A, AB, BP
31 10 40 248 24n-17 2(3n-1) 2(3n-2)(3n-1) 2(24n-17)(3n-2) A, AB, BP
31 12 22 4092 96n-65 12(2n-1) 2(34n-23)(2n-1) 12(96n-65)(34n-23) A, AB, BP
31 12 24 248 56n-25 2(7n-1) (7n-3)(7n-1) 2(56n-25)(7n-3) A, AB, BP
31 16 16 248 4n-1 2n 2n n(4n-1) A=B or B=C
37 10 124 22940 80n-43 10(2n-1) 4(67n-36)(2n-1) 20(80n-43)(67n-36) A, AB, BP
37 10 125 9250 80n-43 10(2n-1) 5(54n-29)(2n-1) 10(80n-43)(54n-29) A, AB, BP
37 10 130 2405 60n-23 5(3n-1) 5(21n-8)(3n-1) 5(60n-23)(21n-8) A, AB, BP
37 10 140 1036 16n-11 2(2n-1) 4(3n-2)(2n-1) 4(16n-11)(3n-2) A, AB, BP
37 10 148 740 15n-8 2(2n-1) 4(15n-8) 4(2n-1)(15n-8) B=kP
37 10 185 370 19n-1 5n 5(19n-1) 5n(19n-1) B=kP
37 12 42 1036 32n-27 4(2n-1) 2(6n-5)(2n-1) 4(32n-27)(6n-5) A, AB, BP
37 14 28 1036 112n-75 14(2n-1) 28(3n-2)(2n-1) 28(112n-75)(3n-2) A, AB, BP
37 16 22 6512 128n-91 16(2n-1) 2(38n-27)(2n-1) 16(128n-91)(38n-27) A, AB, BP
41 11 154 6314 88n-47 11(2n-1) 22(15n-8)(2n-1) 22(88n-47)(15n-8) A, AB, BP
41 11 164 1804 15n-4 4n-1 4(15n-4) 4(4n-1)(15n-4) B=kP
41 12 72 2952 72n-31 6(3n-1) 9(7n-3)(3n-1) 18(72n-31)(7n-3) A, AB, BP
41 12 82 492 7n-1 2n 2(7n-1) 2n(7n-1) B=kP
41 12 123 164 11n-3 3n 3(11n-3) n(11n-3) B=kP
41 14 41 574 3n-1 n 3n-1 n(3n-1) B=kP
41 18 24 2952 144n-103 18(2n-1) 12(7n-5)(2n-1) 36(144n-103)(7n-5) A, AB, BP
43 11 474 224202 88n-45 11(2n-1) 2(485n-248)(2n-1) 22(88n-45)(485n-248) A, AB, BP
43 11 484 20812 88n-45 11(2n-1) 22(45n-23)(2n-1) 22(88n-45)(45n-23) A, AB, BP
43 11 516 5676 47n-4 12n-1 12(47n-4) 12(12n-1)(47n-4) B=kP
43 11 594 2322 8n-5 2n-1 2(5n-3)(2n-1) 2(8n-5)(5n-3) A, AB, BP
43 11 946 946 4n-1 n 2n(4n-1) 2n(4n-1) A=B or B=C
43 12 104 13416 72n-29 6(3n-1) (87n-35)(3n-1) 6(72n-29)(87n-35) A, AB, BP
43 12 105 6020 32n-21 4(2n-1) (26n-17)(2n-1) 4(32n-21)(26n-17) A, AB, BP
43 12 108 2322 72n-29 6(3n-1) 18(5n-2)(3n-1) 18(72n-29)(5n-2) A, AB, BP
43 12 129 516 11n-1 3n 3(11n-1) 3n(11n-1) B=kP
43 12 132 473 20n-17 5n-3 (5n-4)(5n-3) (20n-17)(5n-4) A, AB, BP
43 12 172 258 15n-2 4n 4(15n-2) 2n(15n-2) B=kP
43 15 38 24510 120n-77 15(2n-1) 2(53n-34)(2n-1) 30(120n-77)(53n-34) A, AB, BP
43 18 27 2322 96n-53 6(4n-1) (20n-11)(4n-1) 6(96n-53)(20n-11) A, AB, BP
43 22 22 473 4n-1 2n 2n n(4n-1) A=B or B=C
47 12 565 318660 96n-49 12(2n-1) (1154n-589)(2n-1) 12(96n-49)(1154n-589) A, AB, BP
47 12 566 159612 96n-49 12(2n-1) 2(578n-295)(2n-1) 12(96n-49)(578n-295) A, AB, BP
47 12 567 106596 96n-49 12(2n-1) 3(386n-197)(2n-1) 12(96n-49)(386n-197) A, AB, BP
47 12 568 80088 72n-25 6(3n-1) (435n-151)(3n-1) 6(72n-25)(435n-151) A, AB, BP
47 12 570 53580 96n-49 12(2n-1) 6(194n-99)(2n-1) 12(96n-49)(194n-99) A, AB, BP
47 12 572 40326 72n-25 6(3n-1) 2(219n-76)(3n-1) 6(72n-25)(219n-76) A, AB, BP
47 12 573 35908 32n-17 4(2n-1) (130n-69)(2n-1) 4(32n-17)(130n-69) A, AB, BP
47 12 576 27072 72n-25 6(3n-1) 9(49n-17)(3n-1) 18(72n-25)(49n-17) A, AB, BP
47 12 580 20445 36n-25 3(3n-2) (111n-77)(3n-2) 3(36n-25)(111n-77) A, AB, BP
47 12 582 18236 32n-17 4(2n-1) 2(66n-35)(2n-1) 4(32n-17)(66n-35) A, AB, BP
47 12 588 13818 72n-25 6(3n-1) 6(75n-26)(3n-1) 6(72n-25)(75n-26) A, AB, BP
47 12 600 9400 32n-17 4(2n-1) 8(17n-9)(2n-1) 8(32n-17)(17n-9) A, AB, BP
47 12 611 7332 51n-4 13n-1 13(51n-4) 13(13n-1)(51n-4) B=kP
47 12 612 7191 36n-25 3(3n-2) 9(13n-9)(3n-2) 9(36n-25)(13n-9) A, AB, BP
47 12 636 4982 32n-17 4(2n-1) 4(36n-19)(2n-1) 2(32n-17)(36n-19) A, AB, BP
47 12 658 3948 55n-8 2(7n-1) 14(55n-8) 14(7n-1)(55n-8) B=kP
47 12 705 2820 59n-12 3(5n-1) 15(59n-12) 15(5n-1)(59n-12) B=kP
47 12 708 2773 20n-13 5n-3 (25n-16)(5n-3) (20n-13)(25n-16) A, AB, BP
47 12 752 2256 63n-16 4(4n-1) 16(63n-16) 16(4n-1)(63n-16) B=kP
47 12 846 1692 71n-24 6(3n-1) 18(71n-24) 18(3n-1)(71n-24) B=kP
47 12 940 1410 79n-32 4(5n-2) 20(79n-32) 10(5n-2)(79n-32) B=kP
47 12 987 1316 83n-36 3(7n-3) 21(83n-36) 7(7n-3)(83n-36) B=kP
47 12 1128 1128 4n-1 n 2n(4n-1) 2n(4n-1) A=B or B=C
47 13 156 564 20n-13 5n-2 (5n-3)(5n-2) (20n-13)(5n-3) A, AB, BP
47 14 84 564 32n-17 2(4n-1) 4(2n-1)(4n-1) 4(32n-17)(2n-1) A, AB, BP
47 14 94 329 7n-2 2n 2(7n-2) n(7n-2) B=kP
47 15 60 564 36n-25 3(3n-1) 3(3n-2)(3n-1) 3(36n-25)(3n-2) A, AB, BP
47 16 47 752 3n-1 n 3n-1 n(3n-1) B=kP
47 16 48 564 40n-33 2(5n-2) (5n-4)(5n-2) 2(40n-33)(5n-4) A, AB, BP
47 18 34 7191 108n-61 9(3n-1) (39n-22)(3n-1) 9(108n-61)(39n-22) A, AB, BP
47 18 36 564 96n-49 6(4n-1) 12(2n-1)(4n-1) 12(96n-49)(2n-1) A, AB, BP
47 20 30 564 96n-49 4(6n-1) 6(2n-1)(6n-1) 12(96n-49)(2n-1) A, AB, BP
47 21 28 564 96n-49 3(8n-1) 4(2n-1)(8n-1) 12(96n-49)(2n-1) A, AB, BP
47 24 24 564 4n-1 2n 2n n(4n-1) A=B or B=C
E-mail : kc2h-msm@asahi-net.or.jp 三島 久典