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%I #17 Jun 13 2017 10:38:39
%S 1,3,5,11,47,79,275,839,1877,3399,5371,6671,30659,43575
%N Numbers n such that 54*10^n + 1 is prime.
%C No more terms through 10^5.
%o (PARI) is(n)=ispseudoprime(54*10^n+1) \\ _Charles R Greathouse IV_, Jun 13 2017
%K nonn
%O 1,2
%A _R. K. Guy_
%E a(1)-a(9) computed by Cletus Emmanuel (cemmanu(AT)uvi.edu) and _Richard Pinch_
%E a(10)-a(14) from Cletus Emmanuel (cemmanu(AT)yahoo.com), submitted by _Ray Chandler_, Feb 15 2005
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