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A205244
Number of (n+1)X7 0..2 arrays with the number of rightwards and downwards edge increases in each 2X2 subblock differing from the number in each of its horizontal and vertical neighbors
0
677732, 25443411, 1334713506, 60907844595, 3053080325738, 145542216126349, 7109556887269900, 344112922016013626, 16763097381054518808
OFFSET
1,1
COMMENTS
Column 6 of A205246
EXAMPLE
Some solutions for n=4
..2..2..2..1..0..0..1....1..0..1..2..1..0..0....0..0..2..0..1..1..1
..2..0..1..2..0..0..1....2..1..2..2..1..1..2....2..0..1..0..2..0..2
..2..2..1..1..0..1..2....2..0..1..0..1..0..0....0..1..2..0..2..0..0
..1..0..1..1..1..2..0....2..1..2..0..2..0..2....1..2..2..0..0..1..2
..2..2..2..1..0..1..0....2..1..1..0..2..0..0....2..1..1..1..1..2..2
CROSSREFS
Sequence in context: A257360 A251884 A237005 * A119404 A014886 A253868
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 24 2012
STATUS
approved