G.f.: Sum_{n>=0} ( (1+x)^n - 1 )^n * 2^n / (3 - 2*(1+x)^n)^(n+1).
A317662
G.f.: Sum_{n>=0} ( (1+x)^n - 1 )^n * 2^n / (3 - 2*(1+x)^n)^(n+1).
Terms
- a(0) =1a(1) =2a(2) =24a(3) =448a(4) =11820a(5) =401392a(6) =16668960a(7) =818355488a(8) =46367354632
External references
- oeis: A317662