a(n) = Sum_{k=0..n} (-1)^(n-k) * k^(k*(n-k)).

A349894

a(n) = Sum_{k=0..n} (-1)^(n-k) * k^(k*(n-k)).

Terms

    a(0) =1a(1) =0a(2) =1a(3) =-3a(4) =-10a(5) =410a(6) =42985a(7) =-6527829a(8) =-24060996846

External references