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A153524
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Number of planar n X n X n binary triangular grids with no more than 3 ones in any 3 X 3 X 3 subtriangle.
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0
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1, 2, 8, 42, 418, 7166, 196648, 9262421, 735124501, 97462705054, 21772941967902, 8177116027167826, 5158458258244584078, 5470968994479723869739, 9752808741716616515809575
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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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