G.f.: exp( Sum_{n>=1} binomial(2*n,n)^4 * x^n/n ).

A224736

G.f.: exp( Sum_{n>=1} binomial(2*n,n)^4 * x^n/n ).

Terms

    a(0) =1a(1) =16a(2) =776a(3) =64384a(4) =7151460a(5) =947788608a(6) =141137282720

External references