A203549 Number of nX7 0..4 arrays with every nonzero element less than or equal to some NW, E or S neighbor

1, 5448482, 158110806032, 1791660443900385, 18555799450636433964, 218138773893328980719919, 2637221656906543119366072476, 31262034046818587403571213590974, 368265394744290722981036142149330527

Offset

1,2

Comments

Column 7 of A203550

Links

R. H. Hardin, Table of n, a(n) for n = 1..37

Example

Some solutions for n=5
..4..2..2..1..0..0..2....4..1..4..1..3..0..1....1..4..2..3..3..4..1
..4..3..2..4..1..0..2....4..0..4..4..3..3..2....0..4..3..2..1..4..3
..4..1..2..4..0..0..2....4..4..1..2..2..0..3....3..4..1..0..3..4..0
..4..3..4..4..3..2..2....2..3..3..1..3..0..0....1..4..0..1..0..4..0
..4..4..3..4..1..3..2....2..2..1..0..3..3..0....3..4..4..2..3..4..4

Crossrefs

Sequence in context: A263214 A125832 A206325 * A230793 A263197 A283652

Adjacent sequences: A203546 A203547 A203548 * A203550 A203551 A203552

Keyword

nonn

Author

R. H. Hardin Jan 02 2012

Status

approved