G.f. A(x) satisfies A(x) = 1 / ((1 + x) * (1 - 2 * x * A(x)^2)).
A349255
G.f. A(x) satisfies A(x) = 1 / ((1 + x) * (1 - 2 * x * A(x)^2)).
Terms
- a(0) =1a(1) =1a(2) =7a(3) =47a(4) =369a(5) =3113a(6) =27631a(7) =254239a(8) =2403361a(9) =23201393a(10) =227771831a(11) =2266983119a(12) =22822484497a(13) =231994748633
External references
- oeis: A349255