A203504 Number of nX6 0..6 arrays with every nonzero element less than or equal to some NW, E or S neighbor

1, 7959529, 312327861320, 4878810545594780, 63659189467084692929, 915339495505231856501713, 13871923767653971368743823518, 207909111090413537890396052021099, 3082221608346354059412848837196702297

Offset

1,2

Comments

Column 6 of A203506

Links

R. H. Hardin, Table of n, a(n) for n = 1..20

Example

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

Crossrefs

Sequence in context: A237338 A360905 A233797 * A233803 A204970 A185929

Adjacent sequences: A203501 A203502 A203503 * A203505 A203506 A203507

Keyword

nonn

Author

R. H. Hardin Jan 02 2012

Status

approved