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%I #5 Apr 26 2012 14:30:20
%S 2,4,5,14,16,17,34,38,133,175,218,284,1036,1441,1550,2893,2933,3770
%N Positive integers n such that n*2^n - 3 is prime.
%C Similar to the Woodall primes, A050918.
%C The next term in this sequence is unknown; if it is infinite, the next term is greater than 8000.
%e 5 = 2*2^2 - 3; 61 = 4*2^4 - 3; 157 = 5*2^5 - 3
%p #choose N large, then S is the desired set
%p f:=n->n*2^n - 3:
%p S:={}:
%p for n from 0 to N do if(isprime(f(n))) then S:=S union {n}: fi: od
%Y Cf. A050918. Values for primes are A182352.
%K nonn
%O 1,1
%A _Patrick Devlin_, Apr 26 2012
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