Number of (n+1)X2 0..3 arrays with no 2X2 subblock commuting with any of its horizontal and vertical 2X2 subblock neighbors.
A186554
Number of (n+1)X2 0..3 arrays with no 2X2 subblock commuting with any of its horizontal and vertical 2X2 subblock neighbors.
Terms
- a(0) =256a(1) =3891a(2) =60074a(3) =927477a(4) =14319230a(5) =221073168a(6) =3413126694a(7) =52694924343a(8) =813551707879
External references
- oeis: A186554