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A153470
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1/7 of the number of 7-colorings of a planar n X n X n triangular grid.
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1
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1, 30, 3750, 1953750, 4242798750, 38404604583750, 1448977637979903750, 227870224522898915943750, 149369176223578379939728893750, 408114381491174443782294469248048750, 4647830909678374872940213803359098309308750
(list; graph; refs; listen; history; internal format)
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