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A074121 Group successively larger composite numbers so that the sum of the n-th group is a multiple of n. Sequence gives the first term in each group. +0
4
4, 6, 8, 12, 14, 18, 20, 24, 25, 36, 48, 52, 69, 104, 112, 129, 160, 187, 207, 243, 259, 291, 301, 310, 315, 333, 356, 361, 388, 425, 450, 471, 519, 528, 608, 633, 665, 668, 687, 721, 783, 790, 875, 897, 994, 1016, 1047, 1138, 1174, 1179, 1274, 1278, 1344 (list; graph; listen)
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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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