

A085894


Group the natural numbers such that the product of the nth group has n prime divisors. (1), (2), (3,4), (5,6,),(7,8,9,10),(11,12,13,14),(15,16,17,18,19,20,21),... Sequence contains first terms of every group.


2



1, 2, 3, 5, 7, 11, 15, 22, 29, 36, 44, 54, 66, 77, 90, 104, 119, 138, 154, 173, 191, 212, 231, 255, 279, 303, 329, 356, 384, 413, 444, 473, 506, 539, 574, 611, 648, 686, 724, 765, 804, 849, 893, 938, 982, 1031, 1078, 1130, 1178, 1230, 1282, 1338, 1390, 1443
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