Number of (n+1)X3 0..3 arrays with no 2X2 subblock sum equal to any horizontal or vertical neighbor 2X2 subblock sum.

A185573

Number of (n+1)X3 0..3 arrays with no 2X2 subblock sum equal to any horizontal or vertical neighbor 2X2 subblock sum.

Terms

    a(0) =3392a(1) =125664a(2) =4649320a(3) =173985944a(4) =6508370600a(5) =243047375432

External references