A242197 Numbers k such that k*14^k + 1 is prime.

3, 5, 6, 9, 33, 45, 243, 252, 1798, 2429, 5686, 12509, 42545

Offset

1,1

Links

Table of n, a(n) for n=1..13.

G. Loeh, Generalized Cullen primes

Mathematica

Select[Range[2000], PrimeQ[# 14^# + 1] &]

Prog

(Magma) [n: n in [0..2000] | IsPrime(n*14^n+1)];
(PARI) is(n)=ispseudoprime(n*14^n+1) \\ Charles R Greathouse IV, Jun 06 2017

Crossrefs

Cf. similar sequences listed in A242176.

Sequence in context: A095829 A054871 A248644 * A283051 A244671 A232531

Adjacent sequences: A242194 A242195 A242196 * A242198 A242199 A242200

Keyword

nonn,more

Author

Vincenzo Librandi, May 08 2014

Extensions

a(10)-a(13) from Loeh's list (see Links) - Bruno Berselli, May 08 2014

Status

approved