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Search: id:A151586
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| A151586 |
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Number of permutations of 2 indistinguishable copies 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, 184, 41450, 2698344, 101727276, 2846840080, 66502921806, 1382518990400
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