G.f. A(x) satisfies: A(x) = x * (1 + A(x))^3 / (1 - 4 * A(x)).
A365817
G.f. A(x) satisfies: A(x) = x * (1 + A(x))^3 / (1 - 4 * A(x)).
Terms
- a(0) =0a(1) =1a(2) =7a(3) =80a(4) =1119a(5) =17437a(6) =290532a(7) =5066364a(8) =91311055a(9) =1687341227a(10) =31797227631a(11) =608727899936
External references
- oeis: A365817