A263014 -id:A263014 - cp's OEIS frontend

A263016 Numbers n such that A263014(n) > 0.

20, 24, 40, 48, 60, 80, 96, 120, 140, 156, 160, 180, 192, 240, 260, 272, 280, 312, 320, 336, 340, 360, 384, 408, 420, 460, 468, 480, 520, 540, 544, 560, 580, 600, 624, 640, 672, 680, 696, 720, 740, 768, 780

Offset: 1

José María Grau Ribas, Oct 07 2015

nonn

Hans Havermann, Table of n, a(n) for n = 1..530

Cf. A263014, A263015, A290287.

sumin[n_, k_] := Mod[Sum[If[GCD[i, n] == 1, PowerMod[i, k, n], 0], {i, 1, n}], n]; Select[Range[100], sumin[#, #] > 0 &]

A290287 Nonzero entries in A263014 in order of appearance.

Original entry on oeis.org

8, 16, 32, 16, 24, 48, 64, 16, 84, 12, 32, 36, 64, 64, 52, 128, 56, 48, 128, 96, 68, 144, 256, 136, 252, 184, 108, 256, 208, 324, 512, 224, 232, 400, 192, 512, 384, 272, 232, 576, 148, 256, 36, 616, 208, 168, 344, 736, 432, 564, 64, 196, 328, 864, 204, 832, 212, 216, 960, 420, 896, 928, 400, 768, 1008, 424, 768, 480, 576

Offset: 1