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A153950
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Number of planar n X n X n binary triangular grids symmetric under 120 degree rotation with no more than 6 ones in any 5 X 5 X 5 subtriangle.
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0
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1, 2, 2, 4, 11, 16, 47, 268, 865, 4671, 46197, 216961, 1952323, 31953148, 252461942, 3687648150, 101320234793
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,2
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LINKS
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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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