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A023896 Sum of positive integers in reduced residue system modulo n. a(1) = 1 by convention. +0
18
1, 1, 3, 4, 10, 6, 21, 16, 27, 20, 55, 24, 78, 42, 60, 64, 136, 54, 171, 80, 126, 110, 253, 96, 250, 156, 243, 168, 406, 120, 465, 256, 330, 272, 420, 216, 666, 342, 468, 320, 820, 252, 903, 440, 540, 506, 1081, 384, 1029, 500, 816, 624, 1378, 486, 1100, 672 (list; graph; listen)
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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


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