The third right hand column of triangle A167569.

A167570

The third right hand column of triangle A167569.

Terms

    a(0) =6a(1) =80a(2) =1344a(3) =27648a(4) =675840a(5) =19169280a(6) =619315200a(7) =22460497920a(8) =903704739840

External references