E.g.f. L(x) satisfies: L(x) = x*exp(x*d/dx L(x)), where L(x) is the logarithm of e.g.f. of A161967.

A161968

E.g.f. L(x) satisfies: L(x) = x*exp(x*d/dx L(x)), where L(x) is the logarithm of e.g.f. of A161967.

Terms

    a(0) =1a(1) =2a(2) =15a(3) =232a(4) =5905a(5) =220176a(6) =11210479a(7) =743759360a(8) =62179950753

External references