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A153537
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Number of planar n X n X n binary triangular grids with no more than 3 ones in any 5 X 5 X 5 subtriangle.
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0
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1, 2, 8, 42, 176, 576, 4836, 66134, 1154324, 22094979, 473556087, 16081015577, 781788953511, 50068113839258
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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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_R. H. Hardin_, Jan 01 2009
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STATUS
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approved
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