G.f. A(x) satisfies: 1 = Sum_{n>=0} x^n * ((1+x)^(2*n) - A(x))^(n+1), where A(0) = 0.
A307952
G.f. A(x) satisfies: 1 = Sum_{n>=0} x^n * ((1+x)^(2*n) - A(x))^(n+1), where A(0) = 0.
Terms
- a(0) =1a(1) =3a(2) =7a(3) =39a(4) =218a(5) =1396a(6) =10078a(7) =78369a(8) =655415a(9) =5833338a(10) =54863836a(11) =542721779a(12) =5623476082a(13) =60831556079a(14) =685114308524
External references
- oeis: A307952