G.f. A(x) satisfies A(x) = 1 / ((1 - 2 * x) * (1 - x * A(x)^2)).
A349533
G.f. A(x) satisfies A(x) = 1 / ((1 - 2 * x) * (1 - x * A(x)^2)).
Terms
- a(0) =1a(1) =3a(2) =13a(3) =74a(4) =499a(5) =3719a(6) =29494a(7) =243888a(8) =2078431a(9) =18122369a(10) =160885449a(11) =1449268478a(12) =13213370392a(13) =121696581804
External references
- oeis: A349533