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%I #9 May 11 2013 09:26:34
%S 2,3,5,11,23
%N Primes of the form n!! + (n+1)!!.
%C These are all primes of the form n!! + (n+1)!! Corresponding values of n are 0, 1, 2, 3, 4. At n>4, n!! + (n+1)!! is always composite, cf. A118333.
%C Apparently also the set of primes p(n) such that p(n)^2 - 2^n is prime. - _Irina Gerasimova_, May 09 2013
%Y Cf. A118333.
%K fini,full,nonn
%O 1,1
%A _Zak Seidov_, Apr 23 2006
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