G.f. A(x) satisfies A(x) = (1 + x*A(x)/(1 - x*A(x))^3)^2.
A365135
G.f. A(x) satisfies A(x) = (1 + x*A(x)/(1 - x*A(x))^3)^2.
Terms
- a(0) =1a(1) =2a(2) =11a(3) =68a(4) =467a(5) =3418a(6) =26133a(7) =206264a(8) =1667908a(9) =13746476a(10) =115050074a(11) =975180582a(12) =8354044986a(13) =72215867960a(14) =629139381448
External references
- oeis: A365135