G.f.: 1 = Sum_{n>=0} a(n)*x^n/(1+x)^(4*2^n).
A137158
G.f.: 1 = Sum_{n>=0} a(n)*x^n/(1+x)^(4*2^n).
Terms
- a(0) =1a(1) =4a(2) =22a(3) =228a(4) =4749a(5) =200240a(6) =17034964a(7) =2913479848a(8) =999402129243
External references
- oeis: A137158
A137158
G.f.: 1 = Sum_{n>=0} a(n)*x^n/(1+x)^(4*2^n).