Self-convolution square-root of A118191, where A118191 is column 0 of the matrix square of triangle A118190 with A118190(n,k) = (5^k)^(n-k).

A118195

Self-convolution square-root of A118191, where A118191 is column 0 of the matrix square of triangle A118190 with A118190(n,k) = (5^k)^(n-k).

Terms

    a(0) =1a(1) =1a(2) =3a(3) =23a(4) =411a(5) =15771a(6) =1353045a(7) =252512065a(8) =106798723795

External references