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A093911 Group the natural numbers so that the n-th group has at least n members and every group product is a multiple of that of the previous group. a(n) is the first member of the n-th group. +0
4
1, 2, 4, 7, 11, 17, 27, 47, 87, 167, 327, 635, 1263, 2519, 5007, 10007, 19947, 39875, 79739, 159399, 318779, 637503, 1274999, 2549979, 5099903, 10199787, 20399535, 40799063, 81598083, 163196135, 326392259, 652784499, 1305568943, 2611137839 (list; graph; listen)
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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.


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