a(n) = [x^n] 1/(1 - x) * Legendre_P(n, (1 + x)/(1 - x))^n for n >= 0.
A364116
a(n) = [x^n] 1/(1 - x) * Legendre_P(n, (1 + x)/(1 - x))^n for n >= 0.
Terms
- a(0) =1a(1) =3a(2) =73a(3) =5623a(4) =908001a(5) =251831261a(6) =106898093065
External references
- oeis: A364116