G.f. A(x) satisfies A(x) = 1/((1 - x*A(x)^2) * (1 - x*A(x))^2).
A379185
G.f. A(x) satisfies A(x) = 1/((1 - x*A(x)^2) * (1 - x*A(x))^2).
Terms
- a(0) =1a(1) =3a(2) =18a(3) =139a(4) =1222a(5) =11618a(6) =116372a(7) =1209779a(8) =12930966a(9) =141225530a(10) =1569136588a(11) =17680779230a(12) =201562070356
External references
- oeis: A379185