a(n) = the numerator of ( Sum_{k = 1..n} (-1)^(n+k)*(1/k)*binomial(n,k)* binomial(n+k,k)^2 ).
A357560
a(n) = the numerator of ( Sum_{k = 1..n} (-1)^(n+k)*(1/k)*binomial(n,k)* binomial(n+k,k)^2 ).
Terms
- a(0) =0a(1) =4a(2) =0a(3) =94a(4) =500a(5) =19262a(6) =50421a(7) =2929583a(8) =25197642a(9) =2007045752a(10) =3634262225a(11) =368738402141
External references
- oeis: A357560