G.f.: 1 = Sum_{n>=0} a(n) * x^n / (1 + x*(1+x)^n)^(n+1).
A337849
G.f.: 1 = Sum_{n>=0} a(n) * x^n / (1 + x*(1+x)^n)^(n+1).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =9a(5) =45a(6) =237a(7) =1591a(8) =11795a(9) =99651a(10) =928507a(11) =9474043a(12) =104866399a(13) =1249073623a(14) =15914416345a(15) =215724860511
External references
- oeis: A337849