1/729 the number of (n+2)X4 0..2 arrays with no 3X3 subblock trace equal to any horizontal or vertical neighbor 3X3 subblock trace.
A185884
1/729 the number of (n+2)X4 0..2 arrays with no 3X3 subblock trace equal to any horizontal or vertical neighbor 3X3 subblock trace.
Terms
- a(0) =588a(1) =28086a(2) =1367896a(3) =66642628a(4) =3246601822a(5) =158165462152
External references
- oeis: A185884