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%I #13 Sep 27 2016 09:30:25
%S 0,1,2,3,4,9,19,25,39,63,133,157,274,943,1009,1353,7297,16221,25256,
%T 30424,52147
%N Numbers n such that 2*10^n+11 is prime.
%C a(22) > 10^5. - _Robert Price_, Jan 10 2015
%t Do[ If[ PrimeQ[2*10^n + 11], Print[n]], {n, 0, 4800}]
%o (PARI) is(n)=isprime(2*10^n+11) \\ _Charles R Greathouse IV_, Sep 27 2016
%Y Cf. A081677.
%K hard,more,nonn
%O 1,3
%A _Carl R. White_, Aug 20 2003
%E Edited and extended by _Robert G. Wilson v_, Aug 25 2003
%E Term a(13) (had been listed as 254) corrected by _Jon E. Schoenfield_, Jul 13 2010
%E a(17)-a(21) from _Robert Price_, Jan 10 2015
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