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%I #12 Aug 21 2014 00:41:21
%S 13,37,181,373,757,3061,6133,12277,196597,1572853,25165813,805306357,
%T 3221225461,6442450933,12884901877,26388279066613,3377699720527861,
%U 1813388729421943762059253
%N Primes of the form 12*2^n - 11.
%H Vincenzo Librandi, <a href="/A173872/b173872.txt">Table of n, a(n) for n = 1..33</a>
%p select(isprime,[seq(12*2^n-11,n=1..1000)]); # _Robert Israel_, Aug 20 2014
%t Select[NestList[2#+11&,13,80],PrimeQ] (* _Harvey P. Dale_, Jun 18 2013 *)
%Y Cf. A139697
%K nonn
%O 1,1
%A _Vincenzo Librandi_, Mar 05 2010
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