1/20 of the number of (n+1) X 7 0..4 arrays with every 2 X 2 subblock strictly increasing clockwise or counterclockwise with one decrease.

A183716

1/20 of the number of (n+1) X 7 0..4 arrays with every 2 X 2 subblock strictly increasing clockwise or counterclockwise with one decrease.

Terms

    a(0) =169a(1) =1797a(2) =16964a(3) =169560a(4) =1683197a(5) =16823812a(6) =168070828a(7) =1680902120a(8) =16810325640a(9) =168150768145

External references