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Search: id:A001277
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| A001277 |
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Number of permutations of length n by rises. (Formerly M2928 N1176)
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+0 4
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| 1, 3, 12, 56, 321, 2175, 17008, 150504, 1485465, 16170035, 192384876, 2483177808, 34554278857, 515620794591, 8212685046336
(list; graph; listen)
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