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Number of primes p such that n!-p is prime.
1

%I #6 Feb 05 2014 20:18:46

%S 0,0,0,1,6,24,78,368,1902,11062,77426,692414,6261624,68889928,

%T 764874856,9274470290

%N Number of primes p such that n!-p is prime.

%C Equals 2*A062311(n) except when n=3.

%Y Cf. A062311.

%K nonn

%O 0,5

%A _Leroy Quet_ and others, May 02 2008

%E a(14), a(15) from _Hans Havermann_, Dec 21 2008