1/128 the number of (n+2)X7 binary arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace.
A185989
1/128 the number of (n+2)X7 binary arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace.
Terms
- a(0) =876a(1) =52966a(2) =1739442a(3) =64582504a(4) =2340935640a(5) =86146689788
External references
- oeis: A185989