Number of nX2 0..6 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor.
A203060
Number of nX2 0..6 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor.
Terms
- a(0) =7a(1) =455a(2) =16625a(3) =491953a(4) =14623955a(5) =449303011a(6) =13830934581a(7) =423540231589
External references
- oeis: A203060