G.f.: Sum_{n>=0} log(1 + Sum_{k>=1} k^n * 2^(n*k) * x^k )^n / n!, a power series in x with integer coefficients.

A277035

G.f.: Sum_{n>=0} log(1 + Sum_{k>=1} k^n * 2^(n*k) * x^k )^n / n!, a power series in x with integer coefficients.

Terms

    a(0) =1a(1) =2a(2) =14a(3) =320a(4) =21036a(5) =4248736a(6) =2753284608

External references