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A198041
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Number of n X n X n 0..6 triangular arrays with each element x equal to the number its neighbors equal to 4,0,2,0,1,0,1 for x=0,1,2,3,4,5,6.
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0
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OFFSET
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1,2
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COMMENTS
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Every 0 is next to 0 4's, every 1 is next to 1 0's, every 2 is next to 2 2's, every 3 is next to 3 0's, every 4 is next to 4 1's, every 5 is next to 5 0's, every 6 is next to 6 1's.
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LINKS
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EXAMPLE
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Some solutions with all values from 0 to 6 for 7 X 7 X 7
........0..............0..............0..............0..............0
.......1.1............0.0............1.1............1.1............1.1
......2.4.1..........0.5.0..........1.6.1..........1.4.2..........1.4.1
.....2.2.1.0........0.0.3.0........0.1.1.0........0.1.2.2........0.2.2.0
....0.0.1.1.1......1.2.2.1.1......1.2.2.3.0......1.1.1.0.0......0.0.2.1.1
...0.5.3.1.6.1....1.4.2.1.6.1....1.4.2.0.5.0....1.6.1.3.5.0....0.5.3.1.6.1
..0.0.0.0.1.1.0..0.1.1.0.1.1.0..0.1.1.0.0.0.0..0.1.1.0.0.0.0..0.0.0.0.1.1.0
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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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