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A118375
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Minimum over all permutations b of 1..n of sum b(i)*b^{-1}(i).
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0
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1, 5, 11, 20, 35, 57, 85, 120, 165, 221, 287, 364, 455, 561, 681, 816, 969, 1141, 1331, 1540, 1771, 2025, 2301, 2600, 2925, 3277, 3655, 4060, 4495, 4961, 5457, 5984, 6545, 7141, 7771, 8436, 9139, 9881, 10661, 11480, 12341, 13245, 14191, 15180, 16215
(list; graph; refs; listen; history; internal format)
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