E.g.f. A(x) satisfies A(x) = (1+x) * exp(x^2 * (1+x)^2 * A(x)).

A389819

E.g.f. A(x) satisfies A(x) = (1+x) * exp(x^2 * (1+x)^2 * A(x)).

Terms

    a(0) =1a(1) =1a(2) =2a(3) =24a(4) =180a(5) =1740a(6) =25320a(7) =399000a(8) =7165200a(9) =152122320a(10) =3583621440a(11) =93240987840

External references