Number of (n+1)X(4+1) 0..3 arrays with each 2X2 subblock having the number of clockwise edge increases less than or equal to the number of counterclockwise edge increases.

A234792

Number of (n+1)X(4+1) 0..3 arrays with each 2X2 subblock having the number of clockwise edge increases less than or equal to the number of counterclockwise edge increases.

Terms

    a(0) =371976a(1) =102517088a(2) =25695321008

External references