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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
(list; graph; refs; listen; history; internal format)
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