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A242196
Numbers k such that k*12^k + 1 is prime.
3
1, 8, 247, 3610, 4775, 19789, 187895
OFFSET
1,2
MATHEMATICA
Select[Range[2300], PrimeQ[# 12^# + 1] &]
PROG
(Magma) [n: n in [0..2300] | IsPrime(n*12^n+1)]
(PARI) is(n)=ispseudoprime(n*12^n+1) \\ Charles R Greathouse IV, Jun 06 2017
CROSSREFS
Cf. similar sequences listed in A242176.
Sequence in context: A062481 A053089 A090241 * A316802 A299648 A219269
KEYWORD
nonn,more
AUTHOR
Vincenzo Librandi, May 08 2014
EXTENSIONS
a(4)- a(7) from Loeh's list (see Links) - Bruno Berselli, May 08 2014
STATUS
approved