A297413 Numbers k such that 2^m == 2 (mod m*(m-1)), where m=A019320(k).

2, 3, 6, 7, 14, 19, 38, 42, 43, 86, 114, 127, 163, 254, 258, 326, 379, 487, 758, 762, 883, 974, 978, 1459, 1766, 2274, 2647, 2918, 2922, 3079, 3943, 5294, 5298, 5419, 6158, 7886, 8754, 9199, 10838, 11827, 14407, 15882, 16759, 18398, 18474, 18523, 23654, 23658, 24967, 26407, 28814, 32514, 33518, 37046, 37339, 39367

Offset: 1

Author

Max Alekseyev, Dec 29 2017

Keywords

• nonn

Comments

Also, numbers k such that A019320(k) belongs to A069051 or A217468.

Crossrefs

Cf. A069051, A217468, A297414.

Contains A297412 as a subsequence.

Programs

PARI

is_A297413(k) = my(m=polcyclo(k,2)); Mod(2,m*(m-1))^m==2;