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A118967 If n doesn't occur among the first (n-1) terms of the sequence, then a(n) = 2n. If n occurs among the first (n-1) terms of the sequence, then a(n) = n/2. +0
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1, 4, 6, 2, 10, 3, 14, 16, 18, 5, 22, 24, 26, 7, 30, 8, 34, 9, 38, 40, 42, 11, 46, 12, 50, 13, 54, 56, 58, 15, 62, 64, 66, 17, 70, 72, 74, 19, 78, 20, 82, 21, 86, 88, 90, 23, 94, 96, 98, 25, 102, 104, 106, 27, 110, 28, 114, 29, 118, 120, 122, 31, 126, 32, 130, 33, 134, 136 (list; graph; listen)
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Last modified December 1 19:22 EST 2009. Contains 167811 sequences.


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