Number of nX3 0..3 arrays with every nonzero element less than or equal to some NW, E or S neighbor.
A203392
Number of nX3 0..3 arrays with every nonzero element less than or equal to some NW, E or S neighbor.
Terms
- a(0) =1a(1) =185a(2) =7785a(3) =210342a(4) =5666072a(5) =163500122a(6) =4711784187a(7) =134023641768
External references
- oeis: A203392