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A197196
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Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,1,3,2,0 for x=0,1,2,3,4
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1
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6, 41, 213, 1283, 7363, 42664, 247053, 1431868, 8291425, 48020216, 278171097, 1611110131, 9331719493, 54050435220, 313063366107, 1813289742008, 10502730648812, 60832658109790, 352347783107193, 2040827608413023
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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 4's, every 1 is next to 1 1's, every 2 is next to 2 3's, every 3 is next to 3 2'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..1..0....1..0..1..1..0....0..0..1..0..1....0..0..0..0..0
..0..0..0..1..0....1..0..0..0..1....1..0..1..0..1....1..0..0..1..1
..0..0..0..0..0....0..0..0..0..1....1..0..0..0..0....1..0..1..0..0
..0..1..1..0..0....0..0..1..1..0....0..1..1..0..0....0..0..1..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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