a(n) = Sum_{k=0..n} binomial(n, k)^2 * (k - n)^k.
A367273
a(n) = Sum_{k=0..n} binomial(n, k)^2 * (k - n)^k.
Terms
- a(0) =1a(1) =1a(2) =-3a(3) =-8a(4) =81a(5) =26a(6) =-3815a(7) =17494a(8) =178241a(9) =-2817746a(10) =3552201a(11) =315952418a(12) =-3635118575a(13) =-11060115936a(14) =782886068497
External references
- oeis: A367273