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Search: id:A151633
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| A151633 |
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Number of permutations of 3 indistinguishable copies of 1..n with exactly 3 adjacent element pairs in decreasing order. |
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1
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| 0, 1, 760, 49682, 1722320, 45699447, 1063783164, 23119658500, 484099087156
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