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A068241
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1/2 the number of colorings of a 5 X 5 square array with n colors.
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0
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1, 290493, 10221446382, 25410195205090, 10988934663584655, 1515888422040128871, 94793386050673781548, 3330373652089796835972, 75543449548467802433805, 1216257376373886871239985
(list; graph; refs; listen; history; internal format)
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