1/4 the number of (n+1)X4 0..3 arrays with every 2X2 subblock having distinct clockwise edge differences.

A209711

1/4 the number of (n+1)X4 0..3 arrays with every 2X2 subblock having distinct clockwise edge differences.

Terms

    a(0) =1241a(1) =40600a(2) =1277340a(3) =40731729a(4) =1293734407a(5) =41170011836

External references