Number of (n+1)X6 0..3 arrays with the number of clockwise edge increases in 2X2 subblocks nondecreasing rightwards and downwards.

A205932

Number of (n+1)X6 0..3 arrays with the number of clockwise edge increases in 2X2 subblocks nondecreasing rightwards and downwards.

Terms

    a(0) =3048544a(1) =1380479280a(2) =490921163308

External references