1/128 the number of (n+2)X6 binary arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace.

A185988

1/128 the number of (n+2)X6 binary arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace.

Terms

    a(0) =200a(1) =6036a(2) =126739a(3) =2854756a(4) =64582504a(5) =1458949494a(6) =32992227496a(7) =746010901791

External references