G.f. A(x) satisfies: A(x) = (1 + 4 * x * A(x)^3) / (1 - x).
A349517
G.f. A(x) satisfies: A(x) = (1 + 4 * x * A(x)^3) / (1 - x).
Terms
- a(0) =1a(1) =5a(2) =65a(3) =1145a(4) =23185a(5) =509005a(6) =11782465a(7) =283138545a(8) =6996125985a(9) =176633573205
External references
- oeis: A349517