%I #6 Jul 05 2018 11:44:41
%S 1,94,45920,55778752,129855889408,503551178817536,2975887276596527104,
%T 25199060941109033697280,292141809626086463957368832
%N Special values of hypergeometric function of type 3F3: a(n)=2^n*(n!)^3* 3F3(n+1, n+1, n+1; 1, 1, 1; 2)*exp(-2), n=0,1...
%C Arises in the boson normal ordering problem
%t Table[2^n*(n!)^3* HypergeometricPFQ[{n+1, n+1, n+1},{1, 1, 1}, 2]*E^(-2), {n,0,15}] (* _Vaclav Kotesovec_, Jul 05 2018 *)
%K nonn
%O 0,2
%A _Karol A. Penson_, Jan 15 2007