1/12 the number of (n+1) X 9 0..5 arrays with every 2 X 2 subblock strictly increasing clockwise or counterclockwise with one decrease, and at least two adjacent blocks having the same increasing direction.

A183728

1/12 the number of (n+1) X 9 0..5 arrays with every 2 X 2 subblock strictly increasing clockwise or counterclockwise with one decrease, and at least two adjacent blocks having the same increasing direction.

Terms

    a(0) =88331a(1) =3528126a(2) =130610844a(3) =5355252106a(4) =221403152762

External references