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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
OFFSET
1,1
COMMENTS
Column 7 of A183584
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: A269145 A187052 A159377 * A068273 A068285 A159408
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 05 2011
STATUS
approved