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Search: id:A145846
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| A145846 |
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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 6. |
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1
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| 1, 2, 8, 47, 357, 3270, 34515, 406460, 5215829, 71677058, 1041363040, 15841778155, 250494079945, 4093630537014
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