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Search: id:A068339
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| A068339 |
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n!^3 *sum{k=1 to n} mu(k)/k^3, where mu(k) is the Moebius function A008683. |
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| 1, 7, 181, 11584, 1434176, 311510016, 106474687488, 54515039993856, 39741464155521024, 39789248881360896000, 52911705535251480576000, 91431427164914558435328000, 200764942140996806158319616000
(list; graph; listen)
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