1/4 the number of (n+1)X5 0..3 arrays with every 2X2 subblock having one or four distinct clockwise edge differences.

A209854

1/4 the number of (n+1)X5 0..3 arrays with every 2X2 subblock having one or four distinct clockwise edge differences.

Terms

    a(0) =9455a(1) =661963a(2) =45071990a(3) =3111914707a(4) =213959648565

External references