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A194014
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Number of ways to arrange 9 points on an n X n X n triangular grid so that it balances at its center.
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1
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0, 0, 0, 1, 136, 4130, 62514, 604546, 4291625, 24185859, 113919241, 464544503, 1682475175, 5516378285, 16616546191, 46520940879, 122188233722, 303383298778, 716597693883, 1618737603962, 3512685981565, 7350652764391, 14882247432591
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OFFSET
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1,5
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for 7 X 7 X 7:
........0..............1..............0..............1..............1
.......0.1............1.0............0.1............1.0............0.0
......0.1.0..........0.0.0..........1.1.0..........0.0.0..........1.0.0
.....0.1.0.1........0.0.1.0........0.0.0.0........0.0.0.0........0.0.0.1
....1.0.0.0.0......0.0.0.1.0......1.0.0.0.0......0.1.1.0.0......0.0.0.0.1
...0.0.0.0.0.1....1.0.0.0.0.1....0.1.0.1.1.0....0.1.0.0.1.1....1.1.0.0.0.1
..0.1.1.0.1.0.0..0.1.0.1.1.0.0..0.0.0.1.0.1.0..1.0.0.0.0.1.0..0.0.1.1.0.0.0
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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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