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%I #10 Jun 13 2017 10:28:55
%S 1,4,5,8,9,12,16,17,33,61,92,113,137,216,237,833,872,948,1308,1728,
%T 2509,4096,5457,6229,6432,6473,6868,7032,8128,8557,10449,11022,15629,
%U 29217,40756,60684
%N Numbers n such that 2^n + 41*2^floor((n+1)/2) - 1 is prime.
%C All certified primes
%o (PARI) is(n)=ispseudoprime(2^n + 41<<((n+1)\2) - 1) \\ _Charles R Greathouse IV_, Jun 13 2017
%Y Cf. A206553.
%K nonn
%O 1,2
%A _Pierre CAMI_, Feb 09 2012
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