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A153527
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Number of planar n X n X n binary triangular grids with no more than 2 ones in any 4 X 4 X 4 subtriangle.
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0
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1, 2, 7, 22, 56, 295, 2298, 20666, 194155, 2700996, 51521837, 1239525245, 36497293583, 1416042960537, 72342354105238, 4760390278139941, 400064661916351750
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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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