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A202911 Number of nX3 0..7 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor 1
64, 31984, 9509536, 2397172032, 622483753816, 165216756703876, 43681585962838352, 11516921180669227688, 3038058234902923710566, 801695505848282515899812, 211540283503697058778299926 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A202916

LINKS

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

EXAMPLE

Some solutions for n=4

..4..6..7....0..7..2....2..1..0....7..3..6....6..3..2....1..6..0....1..5..4

..6..7..7....7..7..3....6..6..3....7..7..6....6..3..1....6..6..0....3..5..3

..6..7..4....5..5..0....4..0..1....3..4..4....1..5..7....1..1..7....5..7..2

..4..5..2....7..7..4....0..3..3....5..5..0....6..6..7....1..2..7....4..7..6

CROSSREFS

Sequence in context: A146517 A009497 A145258 * A013743 A223353 A098843

Adjacent sequences:  A202908 A202909 A202910 * A202912 A202913 A202914

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 26 2011

STATUS

approved

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Last modified September 27 03:24 EDT 2022. Contains 357051 sequences. (Running on oeis4.)