A076210 - OEIS

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A076210

Numbers n such that (-n!!+(n+1)!!+1)/2 is prime.

%I #7 Mar 31 2012 10:29:01

%S 3,5,6,8,13,14,27,112,531,3795,4269,4587,4910

%N Numbers n such that (-n!!+(n+1)!!+1)/2 is prime.

%Y Cf. A006882 (double factorials), A076208, A076209, A076211.

%K nonn

%O 1,1

%A _Zak Seidov_, Nov 02 2002

%E More terms (checked n<5000) from _Hugo Pfoertner_, Jun 22 2003