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A274510 a(n) is the only number m such that 6^(2^m) + 1 is divisible by A273947(n). 0
0, 3, 1, 7, 4, 2, 4, 5, 8, 15, 9, 3, 5, 7, 9, 4, 19, 7, 10, 25, 7, 6, 27, 25, 10, 25, 35, 23, 36, 21, 22, 11, 40, 33 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..34.

PROG

(PARI) forstep(p=3, 10^15, 2, if(!Mod(p, 3)==0, if(isprime(p), o=znorder(Mod(6, p)); x=ispower(2*o); if(2^(x-1)==o, print1(x-2, ", ")))));

CROSSREFS

Cf. A273947.

Sequence in context: A319076 A286513 A193970 * A158841 A213576 A021319

Adjacent sequences:  A274507 A274508 A274509 * A274511 A274512 A274513

KEYWORD

nonn,more

AUTHOR

Arkadiusz Wesolowski, Jun 25 2016

STATUS

approved

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Last modified December 6 08:53 EST 2019. Contains 329788 sequences. (Running on oeis4.)