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A183581 Half the number of nX6 0..3 arrays with each element equal to either the maximum or the minimum of its horizontal and vertical neighbors 1
38, 12024, 1282814, 149355515, 17195908538, 1988200387149, 229716738097391, 26548571098836075, 3068082753691026342, 354569738678873849813, 40976532204608285387767, 4735538672860090875422373 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A183584

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..18

EXAMPLE

Some solutions with a(1,1)<=1 for 3X6

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

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

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

CROSSREFS

Sequence in context: A221354 A096558 A145120 * A030260 A145122 A134182

Adjacent sequences:  A183578 A183579 A183580 * A183582 A183583 A183584

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 05 2011

STATUS

approved

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Last modified May 18 07:10 EDT 2013. Contains 225419 sequences.