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A151576
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Number of permutations of 1..n arranged in a circle with exactly 3 adjacent element pairs in decreasing order.
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0
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0, 4, 55, 396, 2114, 9528, 38637, 146080, 526240, 1831644, 6217523, 20716164, 68059710, 221195824, 712856665
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