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A185611
Number of (n+1)X3 0..2 arrays with every 2X2 subblock sum equal to some horizontal or vertical neighbor 2X2 subblock sum
1
171, 2121, 24993, 313105, 3959747, 50512903, 646053371, 8287005157, 106415024441, 1368098434721, 17598078326551, 226486740265787, 2915699882756875, 37545244543350913, 483541481413780309
OFFSET
1,1
COMMENTS
Column 2 of A185614
LINKS
EXAMPLE
Some solutions for 5X3
..0..2..0....0..2..0....0..0..0....0..2..1....0..0..2....0..2..1....0..2..0
..2..0..0....1..1..1....1..0..1....1..2..2....0..1..0....2..2..1....1..0..1
..2..0..2....1..2..1....1..1..1....0..2..1....0..0..2....1..0..2....2..2..2
..0..2..1....1..1..1....1..1..1....2..2..1....1..0..2....2..1..2....0..1..0
..1..2..0....0..1..0....0..0..0....1..1..2....0..0..2....1..0..2....2..0..2
CROSSREFS
Sequence in context: A199902 A251223 A186868 * A195279 A370299 A016058
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 31 2011
STATUS
approved