First differences of antidiagonal sums of triangular array T: T(j,k) = k*(j-k)! for k < j, T(j,k) = 1 for k = j; 1 <= k <= j.

A130471

First differences of antidiagonal sums of triangular array T: T(j,k) = k*(j-k)! for k < j, T(j,k) = 1 for k = j; 1 <= k <= j.

Terms

    a(0) =0a(1) =2a(2) =5a(3) =21a(4) =106a(5) =640a(6) =4527a(7) =36539a(8) =331508a(9) =3338358a(10) =36946489a(11) =445724977a(12) =5821580670a(13) =81839381996

External references