A209426 Central terms of triangle A209424.

1, 3, 347, 10707908, 72078431500368, 103279205595241909409817, 32276238007289208146779304321387283, 2246642168097747174860193404728752903216792387572, 35410884110668229233891981980646482609768612036854978171150794831

Offset: 0

Author

Paul D. Hanna, Mar 08 2012

Keywords

• nonn

Crossrefs

Cf. A209424, A209425.

Programs

PARI

{a(n)=polcoeff(polcoeff(exp(sum(m=1,2*n,x^m/m*sum(k=0,m,binomial(m,k)^m*y^k))+x*O(x^(2*n))),2*n,x),n,y)}
for(n=0,10,print1(a(n),", "))