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A196209
Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,0,3,4,1 for x=0,1,2,3,4
1
17, 43, 42, 305, 751, 2922, 10986, 35529, 128823, 472599, 1687338, 6179264, 22255717, 79844666, 288974977, 1050069655, 3810469340, 13776469497, 49876710085, 180636295947, 654371189198, 2372238997568, 8596886259187
OFFSET
1,1
COMMENTS
Every 0 is next to 0 2's, every 1 is next to 1 0's, every 2 is next to 2 3's, every 3 is next to 3 4's, every 4 is next to 4 1's
Column 7 of A196210
LINKS
EXAMPLE
Some solutions for n=4
..1..0..0..1..1..0..0....0..1..1..0..0..0..0....0..1..1..0..1..1..0
..1..1..1..4..1..0..0....0..1..4..1..1..1..1....1..4..1..0..1..1..0
..0..1..4..1..1..0..0....1..1..1..1..1..1..1....1..1..4..1..1..1..1
..0..1..1..0..1..1..1....1..0..0..0..0..0..0....0..0..1..1..0..0..1
CROSSREFS
Sequence in context: A044094 A044475 A024188 * A196476 A086006 A195685
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 29 2011
STATUS
approved