A203190 Number of nX7 0..4 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor

3985, 271942421, 9045835238617, 257892549401944763, 7699282272868336554723, 232103745979086439437076471, 6970324759861265041580630860421, 209209746691129348723930919203856597

Offset

1,1

Comments

Column 7 of A203191

Links

R. H. Hardin, Table of n, a(n) for n = 1..12

Example

Some solutions for n=4
..4..3..2..2..1..1..4....1..1..2..3..2..0..1....1..0..4..2..3..2..4
..4..4..1..4..1..1..4....4..3..3..3..0..1..4....1..4..4..2..4..0..4
..4..1..0..4..1..1..1....4..1..3..3..1..4..4....1..1..0..3..4..3..2
..1..2..4..4..0..0..0....3..1..3..3..3..0..0....1..4..4..1..1..2..0

Crossrefs

Sequence in context: A321053 A233648 A186799 * A229382 A159218 A159216

Adjacent sequences: A203187 A203188 A203189 * A203191 A203192 A203193

Keyword

nonn

Author

R. H. Hardin Dec 30 2011

Status

approved