G.f.: Product_{n>=1} [ (1 - 2^n*x^n) / (1 - (n+2)^n*x^n) ]^(1/n).
A205814
G.f.: Product_{n>=1} [ (1 - 2^n*x^n) / (1 - (n+2)^n*x^n) ]^(1/n).
Terms
- a(0) =1a(1) =1a(2) =9a(3) =54a(4) =482a(5) =4239a(6) =55561a(7) =785554a(8) =14133055a(9) =285547760a(10) =6666380256a(11) =172748192767
External references
- oeis: A205814