G.f. A(x) satisfies A(x) = 1/( 1 - x * (1+x)^2 * A(x) )^3.
A382886
G.f. A(x) satisfies A(x) = 1/( 1 - x * (1+x)^2 * A(x) )^3.
Terms
- a(0) =1a(1) =3a(2) =21a(3) =154a(4) =1248a(5) =10710a(6) =95751a(7) =882297a(8) =8320812a(9) =79927938a(10) =779303829a(11) =7692585186a(12) =76726084742a(13) =772066751871
External references
- oeis: A382886