%I #19 Sep 08 2022 08:46:08
%S 1,8,247,3610,4775,19789,187895
%N Numbers k such that k*12^k + 1 is prime.
%H G. Loeh, <a href="http://guenter.loeh.name/gc/status.html">Generalized Cullen primes</a>
%t Select[Range[2300], PrimeQ[# 12^# + 1] &]
%o (Magma) [n: n in [0..2300] | IsPrime(n*12^n+1)]
%o (PARI) is(n)=ispseudoprime(n*12^n+1) \\ _Charles R Greathouse IV_, Jun 06 2017
%Y Cf. similar sequences listed in A242176.
%K nonn,more
%O 1,2
%A _Vincenzo Librandi_, May 08 2014
%E a(4)- a(7) from Loeh's list (see Links) - _Bruno Berselli_, May 08 2014
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