G.f. A(x) satisfies: [x^(n+1)] (1+x - x^2*A(x))^(n*(2*n+1)) = 0, for n >= 0.
A352409
G.f. A(x) satisfies: [x^(n+1)] (1+x - x^2*A(x))^(n*(2*n+1)) = 0, for n >= 0.
Terms
- a(0) =1a(1) =3a(2) =45a(3) =1267a(4) =51597a(5) =2761539a(6) =182885885a(7) =14415019395
External references
- oeis: A352409