1/128 the number of (n+2) X (n+2) binary arrays with each 3 X 3 subblock trace equal to some horizontal or vertical neighbor 3 X 3 subblock trace.
A185984
1/128 the number of (n+2) X (n+2) binary arrays with each 3 X 3 subblock trace equal to some horizontal or vertical neighbor 3 X 3 subblock trace.
Terms
- a(0) =0a(1) =76a(2) =8948a(3) =2854756a(4) =2340935640
External references
- oeis: A185984