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A118966 If n doesn't occur among the first (n-1) terms of the sequence, then a(n)= 2n-1. If n occurs among the first (n-1) terms of the sequence, then a(n) = (n+1)/2. +0
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1, 3, 2, 7, 9, 11, 4, 15, 5, 19, 6, 23, 25, 27, 8, 31, 33, 35, 10, 39, 41, 43, 12, 47, 13, 51, 14, 55, 57, 59, 16, 63, 17, 67, 18, 71, 73, 75, 20, 79, 21, 83, 22, 87, 89, 91, 24, 95, 97, 99, 26, 103, 105, 107, 28, 111, 29, 115, 30, 119, 121, 123, 32, 127, 129, 131, 34, 135 (list; graph; listen)
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Last modified December 20 00:58 EST 2009. Contains 171054 sequences.


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