Number of (n+1)X2 0..3 arrays with the number of rightwards and downwards edge increases in each 2X2 subblock differing from the number in all its horizontal and vertical neighbors.

A205417

Number of (n+1)X2 0..3 arrays with the number of rightwards and downwards edge increases in each 2X2 subblock differing from the number in all its horizontal and vertical neighbors.

Terms

    a(0) =256a(1) =2768a(2) =31216a(3) =345008a(4) =3855292a(5) =42869296a(6) =477932092a(7) =5320759096a(8) =59277447518a(9) =660147565952

External references