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Search: id:A151578
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| A151578 |
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Number of permutations of 1..n arranged in a circle with exactly 5 adjacent element pairs in decreasing order. |
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1
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| 0, 6, 399, 9528, 140571, 1561900, 14413894, 116857368, 862140162, 5925941490, 38576132625, 240659672336
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