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A070807 Composite numbers n such that Cototient(totient(n))=A070556(n) is power of 2. +0
3
4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 26, 28, 30, 32, 34, 35, 36, 39, 40, 42, 45, 48, 51, 52, 56, 58, 60, 64, 65, 68, 70, 72, 78, 80, 84, 85, 87, 90, 96, 102, 104, 105, 112, 116, 119, 120, 128, 130, 136, 140, 144, 145, 153, 156, 160, 168, 170, 174, 180, 192 (list; graph; listen)
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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.


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