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A035272
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One third of deca-factorial numbers.
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4
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1, 13, 299, 9867, 424281, 22486893, 1416674259, 103417220907, 8583629335281, 798277528181133, 82222585402656699, 9291152150500206987, 1142811714511525459401, 151993958030032886100333
(list; graph; refs; listen; history; internal format)
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