A202886 Number of nX5 0..2 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor.

51, 13345, 2223723, 348151747, 56006562037, 9024909392725, 1452080571954205, 233641209300452607, 37595413242729744773, 6049464276674659581373, 973416350404566342317495, 156632059367518718442398187

Offset: 1

Author

R. H. Hardin, Dec 25 2011

Keywords

• nonn

Examples

			Some solutions for n=2
..2..2..1..2..2....1..0..0..2..2....1..2..2..1..0....1..1..1..2..0
..1..1..1..0..2....2..2..0..0..1....0..1..2..0..0....0..2..2..2..1
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210

Crossrefs

Column 5 of A202889.