A274513 a(n) is the only number m such that 11^(2^m) + 1 is divisible by A273949(n).

0, 3, 1, 5, 5, 2, 7, 4, 15, 14, 3, 8, 19, 11, 10, 24, 27, 8, 19, 23, 7, 16, 31, 35, 4, 29, 28, 11, 11, 28, 35

Offset

1,2

Links

Table of n, a(n) for n=1..31.

Prog

(PARI) forstep(p=3, 10^15, 2, if(!Mod(p, 11)==0, if(isprime(p), o=znorder(Mod(11, p)); x=ispower(2*o); if(2^(x-1)==o, print1(x-2, ", ")))));

Crossrefs

Cf. A273949.

Sequence in context: A072919 A273171 A244420 * A104489 A067285 A067286

Adjacent sequences: A274510 A274511 A274512 * A274514 A274515 A274516

Keyword

nonn,more

Author

Arkadiusz Wesolowski, Jun 25 2016

Status

approved