G.f.: A(x) = Sum_{n>=0} [ Sum_{k>=1} (2^n + 2^k)^k*x^k/k ]^n / n!, a power series in x with integer coefficients.
A156630
G.f.: A(x) = Sum_{n>=0} [ Sum_{k>=1} (2^n + 2^k)^k*x^k/k ]^n / n!, a power series in x with integer coefficients.
Terms
- a(0) =1a(1) =4a(2) =36a(3) =692a(4) =38186a(5) =10012732a(6) =14013453284
External references
- oeis: A156630