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

A210351

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

Terms

    a(0) =49484a(1) =13288986a(2) =3506487749a(3) =934012605398

External references