Number of (n+1)X(7+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.

A234785

Number of (n+1)X(7+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) =5085004a(1) =3340355564

External references