A203098 Number of nX5 0..3 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor.

144, 143510, 87531478, 48260497186, 27467664499412, 15712898935252156, 8968410661761080882, 5118067454812170831280, 2921169534343554102418252, 1667264462683367539615630114, 951588418839778093530014930652

Offset: 1

Author

R. H. Hardin Dec 29 2011

Keywords

• nonn

Comments

Column 5 of A203101

Examples

			Some solutions for n=5
..2..2..0..1..1....1..3..1..1..1....1..2..1..1..0....3..1..3..1..3
..2..3..2..0..3....2..3..3..3..0....0..2..0..3..2....3..3..3..1..3
..2..3..1..2..3....3..1..3..2..2....1..1..0..3..3....3..2..3..0..1
..3..3..2..3..2....3..2..1..0..0....1..3..0..1..0....1..1..1..2..1
..3..2..3..3..2....2..3..3..3..0....1..3..2..3..3....2..3..3..2..2
		

Links

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