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A196217
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Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,0,1,2,4 for x=0,1,2,3,4
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1
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25, 1629, 21969, 723029, 21716929, 608417005, 17831030743, 525537881675, 15318916228421, 446553011295591, 13076767423341648, 382744483425525635, 11192520655926210678, 327413888234566814665, 9579556864719697800663
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OFFSET
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1,1
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COMMENTS
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Every 0 is next to 0 3's, every 1 is next to 1 0's, every 2 is next to 2 1's, every 3 is next to 3 2's, every 4 is next to 4 4's
Column 7 of A196218
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LINKS
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R. H. Hardin, Table of n, a(n) for n = 1..45
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EXAMPLE
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Some solutions for n=4
..0..1..2..1..0..0..0....0..2..1..0..1..2..1....0..0..1..1..1..0..1
..0..1..2..2..1..1..1....0..1..2..0..1..2..0....0..0..2..0..2..1..2
..2..1..1..0..1..1..1....0..2..3..1..1..1..1....1..2..1..0..2..1..2
..1..0..1..1..2..0..0....0..1..2..1..0..0..1....1..0..1..1..1..0..1
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CROSSREFS
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Sequence in context: A138246 A219091 A196299 * A196684 A125826 A263967
Adjacent sequences: A196214 A196215 A196216 * A196218 A196219 A196220
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin Sep 29 2011
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STATUS
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approved
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