a(n) = Sum_{k=0..n} (-n)^k * binomial(n,k)^3.
A336180
a(n) = Sum_{k=0..n} (-n)^k * binomial(n,k)^3.
Terms
- a(0) =1a(1) =0a(2) =-11a(3) =136a(4) =-639a(5) =-25624a(6) =1133245a(7) =-27431424a(8) =259448833a(9) =17402599792
External references
- oeis: A336180