a(n) = unreduced numerator in Sum_{k=1..n} (-1)^(k-1)/k^k.

A279020

a(n) = unreduced numerator in Sum_{k=1..n} (-1)^(k-1)/k^k.

Terms

    a(0) =0a(1) =1a(2) =3a(3) =85a(4) =21652a(5) =67690148

External references