G.f. A(x) satisfies: A(x) = 1 / (1 - 2*x) + x * (1 - 2*x)^2 * A(x)^4.
A349581
G.f. A(x) satisfies: A(x) = 1 / (1 - 2*x) + x * (1 - 2*x)^2 * A(x)^4.
Terms
- a(0) =1a(1) =3a(2) =12a(3) =66a(4) =460a(5) =3681a(6) =31848a(7) =289176a(8) =2714044a(9) =26103468a(10) =255876048a(11) =2546717454a(12) =25666830724a(13) =261407935366
External references
- oeis: A349581