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 A177817 Numbers k such that k^3 divides 17^(k^2) + 1. 9
 1, 3, 9, 21, 39, 63, 117, 273, 819, 1467, 2067, 3081, 4269, 6201, 7299, 9243, 10269, 12807, 14469, 16959, 19071, 20421, 21567, 23877, 29883, 43407, 48711, 50877, 51093, 55497, 64701, 89649, 94887, 118713, 133497, 142947, 146133, 149331 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS 3 divides a(n) for n > 1. LINKS CROSSREFS Cf. A127263 (k^3 divides 2^(k^2) + 1). Cf. A128678, A128679, A128680, A128681, A128682, A128683, A128684, A128685. Cf. A177813, A177814, A177816, A177817, A177818, A177819, A177820. Cf. A128677 (least k > p such that (k*p)^3 divides (p-1)^(k*p)^2+1, where p = prime(n) > 2). Sequence in context: A128127 A341433 A014857 * A292392 A112039 A007518 Adjacent sequences: A177814 A177815 A177816 * A177818 A177819 A177820 KEYWORD nonn AUTHOR Alexander Adamchuk, May 14 2010 STATUS approved

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Last modified January 28 17:08 EST 2023. Contains 359895 sequences. (Running on oeis4.)