Half the number of n X 4 binary arrays with no path of adjacent 1's or adjacent 0's from top row to bottom row.
A069442
Half the number of n X 4 binary arrays with no path of adjacent 1's or adjacent 0's from top row to bottom row.
Terms
- a(0) =0a(1) =8a(2) =440a(3) =13002a(4) =291782a(5) =5718464a(6) =103948054a(7) =1806753034a(8) =30539121806a(9) =507006229578
External references
- oeis: A069442