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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
OFFSET
1,2
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
KEYWORD
nonn,more
AUTHOR
STATUS
approved