1/729 the number of (n+2)X6 0..2 arrays with no 3X3 subblock trace equal to any horizontal or vertical neighbor 3X3 subblock trace.

A185886

1/729 the number of (n+2)X6 0..2 arrays with no 3X3 subblock trace equal to any horizontal or vertical neighbor 3X3 subblock trace.

Terms

    a(0) =282672a(1) =66642628a(2) =16772497838

External references