Number of nX5 0..2 arrays with every 1 immediately preceded by 0 to the left or above, and every 2 immediately preceded by 0 1 to the left or above.
A203972
Number of nX5 0..2 arrays with every 1 immediately preceded by 0 to the left or above, and every 2 immediately preceded by 0 1 to the left or above.
Terms
- a(0) =13a(1) =396a(2) =16723a(3) =601521a(4) =22100882a(5) =817293052a(6) =30104480870
External references
- oeis: A203972