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Search: id:A145844
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| A145844 |
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Number of permutations of length 2n which are invariant under the reverse-complement map and have no decreasing subsequences of length 5. |
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1
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| 1, 2, 8, 46, 332, 2784, 25888, 259382, 2749244, 30449416, 349379648
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