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A197077
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Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,1,2,4,0 for x=0,1,2,3,4
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1
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9, 199, 3295, 65251, 1282123, 25822213, 513380599, 10204673140, 203083535620, 4041562578683, 80433524292272, 1600907292520303, 31864518855986700, 634235619536089218, 12624003209531266181, 251272907445585611658
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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 1's, every 2 is next to 2 2's, every 3 is next to 3 4's, every 4 is next to 4 0's
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LINKS
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EXAMPLE
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Some solutions for n=4
..0..0..0..0..2..2....1..0..1..1..0..0....2..2..0..0..1..1....0..0..0..0..0..0
..1..2..2..0..2..2....1..0..0..0..4..0....2..2..0..0..0..0....2..2..0..4..0..0
..1..2..2..0..0..1....0..0..0..0..0..1....0..0..4..0..4..0....2..2..0..0..1..1
..0..0..1..1..0..1....0..0..1..1..0..1....0..0..0..0..0..0....1..1..0..0..0..0
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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