Number of (n+1)X(6+1) 0..3 arrays with no adjacent elements equal and with each 2X2 subblock having the number of clockwise edge increases equal to the number of counterclockwise edge increases.

A234784

Number of (n+1)X(6+1) 0..3 arrays with no adjacent elements equal and with each 2X2 subblock having the number of clockwise edge increases equal to the number of counterclockwise edge increases.

Terms

    a(0) =797988a(1) =241927524a(2) =75353928188

External references