Ninth column of triangle A067410.

A067416

Ninth column of triangle A067410.

Terms

    a(0) =1a(1) =10a(2) =180a(3) =3240a(4) =58320a(5) =1049760a(6) =18895680a(7) =340122240a(8) =6122200320a(9) =110199605760

External references