Row 1 of array in A322765.

A322766

Row 1 of array in A322765.

Terms

    a(0) =1a(1) =4a(2) =26a(3) =249a(4) =3274a(5) =56135a(6) =1207433a(7) =31638625a(8) =987249425a(9) =36030130677

External references