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A183582 Half the number of nX7 0..3 arrays with each element equal to either the maximum or the minimum of its horizontal and vertical neighbors 0
80, 65277, 14823037, 3724940988, 922710498351, 229716738097391, 57140106100076100, 14217486118795912134 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A183584

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions with a(1,1)<=1 for 3X7

..0..0..0..2..2..0..0....0..0..0..1..1..0..0....0..0..0..2..2..0..0

..0..0..0..0..2..0..0....0..0..1..1..1..1..1....0..0..0..0..0..0..3

..0..1..1..1..1..3..3....0..0..0..2..2..1..1....0..1..1..0..3..3..3

CROSSREFS

Sequence in context: A118493 A187052 A159377 * A068273 A068285 A159408

Adjacent sequences:  A183579 A183580 A183581 * A183583 A183584 A183585

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 05 2011

STATUS

approved

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Last modified May 21 08:16 EDT 2013. Contains 225478 sequences.