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A231647
Number of nX4 0..2 arrays with no element less than a strict majority of its horizontal and vertical neighbors
1
22, 341, 7682, 137961, 2412274, 42882766, 765163605, 13643499478, 243317286312, 4340128403053, 77412117578960, 1380680024126767, 24625023800964584, 439200986311182069, 7833405373009045177, 139713294059336266128
OFFSET
1,1
COMMENTS
Column 4 of A231651
LINKS
EXAMPLE
Some solutions for n=3
..1..1..1..1....1..0..0..2....2..1..0..0....0..1..2..1....1..0..0..2
..0..0..2..2....0..0..0..1....0..0..0..0....0..0..0..1....1..0..0..1
..0..0..2..2....0..0..0..1....0..0..2..1....2..0..0..2....1..2..0..0
CROSSREFS
Sequence in context: A332873 A019490 A021254 * A083449 A272525 A277849
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 12 2013
STATUS
approved