G.f. satisfies A(x) = 1 + x * A(x)^4 * (1 + A(x)^2).
A363380
G.f. satisfies A(x) = 1 + x * A(x)^4 * (1 + A(x)^2).
Terms
- a(0) =1a(1) =2a(2) =20a(3) =284a(4) =4712a(5) =85392a(6) =1638112a(7) =32699472a(8) =672188768a(9) =14133399744a(10) =302535052160
External references
- oeis: A363380