G.f. A(x) satisfies: A(x) = 1 + Sum_{k>=1} k*x^k*A(x)^k/(1 - x^k*A(x)^k).
A307399
G.f. A(x) satisfies: A(x) = 1 + Sum_{k>=1} k*x^k*A(x)^k/(1 - x^k*A(x)^k).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =14a(4) =60a(5) =262a(6) =1218a(7) =5798a(8) =28364a(9) =141239a(10) =714532a(11) =3660098a(12) =18949830a(13) =98997082a(14) =521218206a(15) =2762807736a(16) =14731968812a(17) =78968221213a(18) =425282844540
External references
- oeis: A307399