Number of (n+1)X4 0..3 arrays with the number of clockwise edge increases in 2X2 subblocks nondecreasing rightwards and downwards.

A205930

Number of (n+1)X4 0..3 arrays with the number of clockwise edge increases in 2X2 subblocks nondecreasing rightwards and downwards.

Terms

    a(0) =32208a(1) =2554260a(2) =164649752a(3) =9355289120a(4) =490921163308

External references