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Search: id:A115507
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| A115507 |
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Number of circular permutations where every next element in binary notation has ones at the same or adjacent positions of previous element's binary ones. |
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+0
3
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| 1, 1, 2, 1, 2, 18, 72, 42, 126, 1080, 5400, 42240, 253440, 3578400, 28627200, 16914240, 54396720, 620978400, 5417102880, 40328285760
(list; graph; listen)
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