Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).
%I #7 Aug 25 2014 11:41:56
%S 1,1,2,2,4,4,7,7,7,8,10,12,11,13,14,15,19,16,19,18,21,19,24,24,24,26,
%T 27,28,29,31,29,33,33,35,37,37,38,38,41,39,45,44,45,44,49,47,52,48,52,
%U 52,56,52,53,60,59,58,59,65,64,61,65,63,70,70,70,68,73,75,71,76,75,79,78
%N Group the natural numbers such that the product of the n-th 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 the number of terms in the groups.
%Y Cf. A085892, A085894.
%K nonn
%O 0,3
%A _Amarnath Murthy_ and Meenakshi Srikanth (menakan_s(AT)yahoo.com), Jul 10 2003
%E More terms from _Ray Chandler_, Sep 13 2003