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A068245
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1/6 the number of colorings of a 4 X 4 rhombic- or staggered- hexagonal array with n colors.
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0
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1, 7616, 5141250, 552093440, 20631905875, 395001645696, 4771909547076, 41190314035200, 275192443300005, 1502690499112000, 6971521964029766, 28275884687022336, 102456840191225975
(list; graph; refs; listen; history; internal format)
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