G.f. A(x) satisfies A(x) = C(x) / (1 - x*A(x))^4, where C(x) is the g.f. of A000108.
A381877
G.f. A(x) satisfies A(x) = C(x) / (1 - x*A(x))^4, where C(x) is the g.f. of A000108.
Terms
- a(0) =1a(1) =5a(2) =36a(3) =307a(4) =2891a(5) =29029a(6) =304716a(7) =3303712a(8) =36708842a(9) =415818822a(10) =4783832314a(11) =55743318579a(12) =656528284027
External references
- oeis: A381877