Sixth column of triangle A067425.

A067426

Sixth column of triangle A067425.

Terms

    a(0) =1a(1) =9a(2) =216a(3) =5184a(4) =124416a(5) =2985984a(6) =71663616a(7) =1719926784a(8) =41278242816a(9) =990677827584

External references