Second diagonal of triangle A048601.

A051106

Second diagonal of triangle A048601.

Terms

    a(0) =1a(1) =3a(2) =14a(3) =105a(4) =1287a(5) =26026a(6) =873392a(7) =48825972a(8) =4559177300a(9) =712438499850

External references