Number of (n+1) X 6 0..2 arrays with the number of clockwise edge increases in 2 X 2 subblocks nondecreasing, and counterclockwise edge increases nonincreasing, rightwards and downwards.

A206539

Number of (n+1) X 6 0..2 arrays with the number of clockwise edge increases in 2 X 2 subblocks nondecreasing, and counterclockwise edge increases nonincreasing, rightwards and downwards.

Terms

    a(0) =26481a(1) =594348a(2) =14528199a(3) =369441411a(4) =9567269487a(5) =249853070682

External references