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A302090
Numbers k such that 6*k^k + 5 is prime.
3
0, 1, 2, 3, 6, 7, 134, 533, 2911, 4351
OFFSET
1,3
COMMENTS
a(11) > 50000. - Robert Price, Feb 16 2020
PROG
(PARI) for(n=0, 500, if(isprime(6*n^n+5), print1(n", ")))
CROSSREFS
Numbers k such that b*k^k + b - 1 is prime: A110932 (b=2), A160360 (b=3), A301520 (b=4), A302088 (b=5), this sequence (b=6).
Cf. A302091.
Sequence in context: A070301 A329294 A291659 * A088414 A375702 A133441
KEYWORD
nonn,more,hard
AUTHOR
Seiichi Manyama, Apr 01 2018
EXTENSIONS
a(8) from Jon E. Schoenfield, Apr 01 2018
a(9)-a(10) from Vaclav Kotesovec, Apr 01 2018
STATUS
approved