Row sums of triangle A102920, which equals the matrix square of A102098.

A102923

Row sums of triangle A102920, which equals the matrix square of A102098.

Terms

    a(0) =1a(1) =7a(2) =85a(3) =2369a(4) =127796a(5) =11417607a(6) =1536493698a(7) =292107021267

External references