a(n) = the numerator of ( Sum_{k = 1..n} (-1)^(n+k)*(1/k^3)*binomial(n,k)* binomial(n+k,k)^2 ).
A357561
a(n) = the numerator of ( Sum_{k = 1..n} (-1)^(n+k)*(1/k^3)*binomial(n,k)* binomial(n+k,k)^2 ).
Terms
- a(0) =0a(1) =4a(2) =-27a(3) =1367a(4) =-15625a(5) =3129353a(6) =-14749a(7) =308477847a(8) =14343020119
External references
- oeis: A357561