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A197650
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Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 1,3,4,6,0,2,6 for x=0,1,2,3,4,5,6
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0
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1, 1, 4, 18, 89, 914, 14965, 321510, 12712330, 879485238, 102013590235, 20591125917598, 6951014585410261
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OFFSET
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1,3
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COMMENTS
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Every 0 is next to 0 1's, every 1 is next to 1 3's, every 2 is next to 2 4's, every 3 is next to 3 6's, every 4 is next to 4 0's, every 5 is next to 5 2's, every 6 is next to 6 6's
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LINKS
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EXAMPLE
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Some solutions for 5X5X5
......0..........0..........0..........0..........0..........0..........0
.....0.0........0.4........4.0........4.0........0.0........0.0........4.0
....2.4.0......4.0.0......0.0.4......0.0.0......0.0.0......0.0.4......0.0.0
...0.4.0.0....0.0.0.0....4.0.0.0....4.0.0.0....0.0.0.4....0.0.0.0....0.0.0.4
..0.0.0.0.0..0.4.0.4.0..0.0.0.4.0..0.0.0.0.0..0.4.0.0.0..0.4.0.0.0..0.0.0.0.0
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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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