A127455 - OEIS

%I #6 Jul 05 2018 11:36:19

%S 1,57,7623,1717767,569652993,257412373497,150716322222399,

%T 110330513710645311,98315269596649808289,104445771545462107915161,

%U 130091667858493841954982519

%N Special values of hypergeometric function of type 2F2: a(n)=3^n*(n!)^2* 2F2(n+1, n+1; 1, 1; 3)*exp(-3),n=0,1...

%t Table[3^n*(n!)^2* HypergeometricPFQ[{n+1, n+1}, {1, 1}, 3]*E^(-3), {n, 0, 15}] (* _Vaclav Kotesovec_, Jul 05 2018 *)

%K nonn

%O 0,2

%A _Karol A. Penson_, Jan 15 2007