Unsigned fifth column (k=4) of triangle A136656 divided by 16.

A136661

Unsigned fifth column (k=4) of triangle A136656 divided by 16.

Terms

    a(0) =1a(1) =30a(2) =645a(3) =12495a(4) =235305a(5) =4452840a(6) =86070600a(7) =1713927600a(8) =35318883600a(9) =754896542400

External references