G.f. A(x) satisfies A(x) = 1 / ((1 - x) * (1 - 2 * x * A(x)^2)).
A349253
G.f. A(x) satisfies A(x) = 1 / ((1 - x) * (1 - 2 * x * A(x)^2)).
Terms
- a(0) =1a(1) =3a(2) =19a(3) =169a(4) =1753a(5) =19795a(6) =236035a(7) =2923857a(8) =37256881a(9) =485202307a(10) =6429346899a(11) =86405569657
External references
- oeis: A349253