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A263016
Numbers n such that A263014(n) > 0.
3
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
1,1
LINKS
MATHEMATICA
sumin[n_, k_] := Mod[Sum[If[GCD[i, n] == 1, PowerMod[i, k, n], 0], {i, 1, n}], n]; Select[Range[100], sumin[#, #] > 0 &]
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved