G.f. A(x) satisfies A(x) = (1 + x*A(x)^2 / (1+x))^3.
A371538
G.f. A(x) satisfies A(x) = (1 + x*A(x)^2 / (1+x))^3.
Terms
- a(0) =1a(1) =3a(2) =18a(3) =151a(4) =1440a(5) =14835a(6) =160793a(7) =1806849a(8) =20859129a(9) =245905348a(10) =2947869600a(11) =35825319390a(12) =440372147956
External references
- oeis: A371538