a(n) = e*(Gamma(2*n,1) - Gamma(n,1)).

A294040

a(n) = e*(Gamma(2*n,1) - Gamma(n,1)).

Terms

    a(0) =0a(1) =1a(2) =14a(3) =321a(4) =13684a(5) =986345a(6) =108504786a(7) =16926795529

External references