|
%I #10 May 12 2017 08:36:15
%S 1,7,38,222,1464,10920,91440,851760,8749440,98340480,1201132800,
%T 15846969600,224651750400,3406180377600,55009501747200,
%U 942833219328000,17093919338496000,326876746420224000,6575237795782656000
%N Diagonal of A056151.
%F a(n)=(3n^2+3n+1)n!=((n+1)^3-n^3)n!=n!A003215(n). - _Paul Barry_, Apr 02 2003
%F E.g.f.: (1 + 4*x + x^2)/(1 - x)^3. - _Ilya Gutkovskiy_, May 12 2017
%t Table[(3n(n+1)+1)n!, {n, 0, 18}]
%Y Cf. A056151.
%K nonn,easy
%O 0,2
%A _N. J. A. Sloane_, Aug 05 2000
%E More terms from _Wouter Meeussen_, Aug 05 2000
|
