G.f.: A(x) = Sum_{n>=0} (-1)^n * (1 -x -2^n*x^2)^(-1) * log(1 -x -2^n*x^2)^n / n!.
A136509
G.f.: A(x) = Sum_{n>=0} (-1)^n * (1 -x -2^n*x^2)^(-1) * log(1 -x -2^n*x^2)^n / n!.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =16a(4) =50a(5) =171a(6) =697a(7) =3416a(8) =21126a(9) =169105a(10) =1794683a(11) =25891713a(12) =507686588a(13) =13878639286a(14) =518836271475
External references
- oeis: A136509