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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

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

Cf. A263014, A263015, A290287.

Sequence in context: A060461 A214177 A044996 * A107302 A219392 A193572

Adjacent sequences:  A263013 A263014 A263015 * A263017 A263018 A263019

KEYWORD

nonn

AUTHOR

José María Grau Ribas, Oct 07 2015

STATUS

approved

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Last modified July 30 07:55 EDT 2021. Contains 346348 sequences. (Running on oeis4.)