G.f. A(x) satisfies: A(x) = (1-x)^3*A(x)^2 - x^2*A'(x).
A143739
G.f. A(x) satisfies: A(x) = (1-x)^3*A(x)^2 - x^2*A'(x).
Terms
- a(0) =1a(1) =3a(2) =9a(3) =28a(4) =90a(5) =300a(6) =1051a(7) =3975a(8) =16971a(9) =86584a(10) =550560a(11) =4354308a(12) =41245021a(13) =448722207a(14) =5443128597a(15) =72294557416
External references
- oeis: A143739