G.f. A(x) satisfies: 1 = Sum_{n>=0} x^n * ((1+x)^n - A(x))^(n+1), where A(0) = 0.
A307940
G.f. A(x) satisfies: 1 = Sum_{n>=0} x^n * ((1+x)^n - A(x))^(n+1), where A(0) = 0.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =8a(4) =28a(5) =128a(6) =616a(7) =3246a(8) =18277a(9) =109143a(10) =687012a(11) =4534864a(12) =31269292a(13) =224515730a(14) =1674200760a(15) =12937083460a(16) =103396000242a(17) =853266369103
External references
- oeis: A307940