Number of n X 2 0..2 arrays with every nonzero element less than or equal to some NW, E or S neighbor.
A202982
Number of n X 2 0..2 arrays with every nonzero element less than or equal to some NW, E or S neighbor.
Terms
- a(0) =1a(1) =9a(2) =63a(3) =323a(4) =1629a(5) =8534a(6) =44885a(7) =234728a(8) =1226239a(9) =6410598a(10) =33519355a(11) =175245104a(12) =916179060a(13) =4789827101a(14) =25041566175a(15) =130918895222a(16) =684451568104
External references
- oeis: A202982