E.g.f.: A(x) = Sum_{n>=0} log( Sum_{k=0..n} C(n,k)^2*x^k )^n*x^n/(n!*n^n).
A180654
E.g.f.: A(x) = Sum_{n>=0} log( Sum_{k=0..n} C(n,k)^2*x^k )^n*x^n/(n!*n^n).
Terms
- a(0) =1a(1) =1a(2) =3a(3) =-13a(4) =-321a(5) =13434a(6) =103022a(7) =-60330726a(8) =4269491916a(9) =422156508320
External references
- oeis: A180654