login
a(n)=(prime(n)!+3)/3.
7

%I #5 Jun 20 2012 12:02:12

%S 3,41,1681,13305601,2075673601,118562476032001,40548366802944001,

%T 8617338912961658880001,2947253997913233984847872000001,

%U 2740946218059307605908520960000001

%N a(n)=(prime(n)!+3)/3.

%t Table[(Prime[n]! + 3)/3, {n, 2, 30}]

%Y Cf. A082672, A089085, A089130, A117141, A007749, A139056-A139066, A020458, A139068, A137390, A139070-A139075, A139148-A139157, A139159, A139160-A139166, A139089, A139168-A139170.

%K nonn

%O 2,1

%A _Artur Jasinski_, Apr 11 2008