G.f. satisfies: A(x) = 1 + x*A(x)^3 + x^2*A(x)^2 + x^3*A(x).
A200029
G.f. satisfies: A(x) = 1 + x*A(x)^3 + x^2*A(x)^2 + x^3*A(x).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =18a(4) =89a(5) =483a(6) =2765a(7) =16441a(8) =100553a(9) =628496a(10) =3996864a(11) =25778259a(12) =168216339a(13) =1108586737a(14) =7367790912a(15) =49326025289a(16) =332342006775
External references
- oeis: A200029