G.f. A(x) satisfies: 1 = Sum_{n>=0} ((1+x)^(2*n) - A(x))^n.
A321602
G.f. A(x) satisfies: 1 = Sum_{n>=0} ((1+x)^(2*n) - A(x))^n.
Terms
- a(0) =1a(1) =2a(2) =5a(3) =68a(4) =1521a(5) =45328a(6) =1660032a(7) =71548008a(8) =3533826841a(9) =196432984748
External references
- oeis: A321602