G.f.: Product_{n>=1} [ (1 - 3^n*x^n) / (1 - (n+3)^n*x^n) ]^(1/n).
A206765
G.f.: Product_{n>=1} [ (1 - 3^n*x^n) / (1 - (n+3)^n*x^n) ]^(1/n).
Terms
- a(0) =1a(1) =1a(2) =12a(3) =87a(4) =907a(5) =8393a(6) =118932a(7) =1683990a(8) =31209334a(9) =635005549a(10) =15054451057a(11) =393600573337
External references
- oeis: A206765