G.f. satisfies: A(x) = (1 + x*A(x)^3) * (1 + x^2*A(x)).
A200716
G.f. satisfies: A(x) = (1 + x*A(x)^3) * (1 + x^2*A(x)).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =17a(4) =84a(5) =453a(6) =2574a(7) =15185a(8) =92119a(9) =571022a(10) =3600981a(11) =23029021a(12) =149000790a(13) =973581692a(14) =6415198045a(15) =42580369370a(16) =284427460919
External references
- oeis: A200716