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A119257 A permutation of the positive integers made by reversing the order of the composites within each run of composites (1 and primes are left alone). +0
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1, 2, 3, 4, 5, 6, 7, 10, 9, 8, 11, 12, 13, 16, 15, 14, 17, 18, 19, 22, 21, 20, 23, 28, 27, 26, 25, 24, 29, 30, 31, 36, 35, 34, 33, 32, 37, 40, 39, 38, 41, 42, 43, 46, 45, 44, 47, 52, 51, 50, 49, 48, 53, 58, 57, 56, 55, 54, 59, 60, 61, 66, 65, 64, 63, 62, 67, 70, 69, 68, 71, 72 (list; graph; listen)
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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.


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