a(n) = (-1)^n * A294359(n) / (n+1)^2.

A294475

a(n) = (-1)^n * A294359(n) / (n+1)^2.

Terms

    a(0) =1a(1) =1a(2) =4a(3) =34a(4) =480a(5) =9806a(6) =265810a(7) =9031672a(8) =369946976a(9) =17763808796a(10) =979237588724

External references