A203503 Number of nX5 0..6 arrays with every nonzero element less than or equal to some NW, E or S neighbor

1, 481122, 3024812086, 8828365834694, 22732800433168401, 63659189467084692929, 184087747131825069346215, 525757549404209888579097977, 1492215909484853316634292325428

Offset

1,2

Comments

Column 5 of A203506

Links

R. H. Hardin, Table of n, a(n) for n = 1..64

Example

Some solutions for n=5
..6..3..0..0..4....6..4..3..5..1....6..6..5..2..2....2..5..1..0..1
..6..3..4..5..4....6..4..6..5..1....3..6..5..0..6....6..5..4..0..6
..6..1..2..5..6....6..6..6..6..0....0..0..2..4..6....6..5..6..6..6
..6..6..4..6..6....6..4..4..1..6....3..5..0..6..6....6..2..3..3..6
..6..6..6..2..6....6..6..1..4..0....5..5..5..0..6....6..6..1..0..0

Crossrefs

Sequence in context: A015332 A238178 A250714 * A172674 A184495 A237943

Adjacent sequences: A203500 A203501 A203502 * A203504 A203505 A203506

Keyword

nonn

Author

R. H. Hardin Jan 02 2012

Status

approved