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Search: id:A058986
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| A058986 |
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Sorting by prefix reversal. You can only reverse segments that include the initial term of the current permutation; a(n) is the number of reversals that are needed to transform an arbitrary permutation of n letters to the identity permutation. |
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7
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| 0, 1, 3, 4, 5, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19
(list; graph; listen)
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