a(n) = coefficient of x^n*y^(n+1)/n! in Log( Sum_{n>=0} (n + y)^(2*n) * x^n/n! ), for n>=1.
A266526
a(n) = coefficient of x^n*y^(n+1)/n! in Log( Sum_{n>=0} (n + y)^(2*n) * x^n/n! ), for n>=1.
Terms
- a(0) =1a(1) =4a(2) =42a(3) =752a(4) =19360a(5) =654912a(6) =27546736a(7) =1388207872a(8) =81621893376
External references
- oeis: A266526