A065294 Values of k such that A065293(k) = 0.

2, 3, 4, 7, 8, 10, 14, 15, 16, 17, 19, 22, 23, 25, 32, 33, 37, 43, 44, 46, 47, 51, 55, 57, 59, 64, 67, 68, 69, 76, 79, 82, 85, 87, 88, 89, 92, 93, 94, 95, 99, 101, 102, 109, 110, 113, 114, 115, 116, 119, 122, 125, 127, 128, 129, 133, 134, 137, 141, 142, 143, 148

Offset: 1

Author

Jonathan Ayres (jonathan.ayres(AT)btinternet.com), Oct 28 2001

Keywords

• nonn

Links

• Michel Marcus, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A065293.

Programs

Mathematica

Position[Table[Count[Range[0, n - 1], ?(Mod[2^#, n] == # &)], {n, 150}], 0][[All, 1]] (* _Michael De Vlieger, Jun 19 2018 *)

PARI

isok(n) = sum(s=0, n-1, Mod(2, n)^s == s) == 0; \\ Michel Marcus, Jun 19 2018

Extensions

Incorrect term 1 removed by Michel Marcus, Jun 20 2018