This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A104466 #3 Mar 31 2012 13:20:57 %S A104466 2,0,30,840,2730,72930,870870,9699690,340510170,9592993410, %T A104466 265257422430,8624101075590,304250263527210,14299762385778870, %U A104466 1164365758518632670,43657174563782890110,1987938667108592728530,172494415819766906755890 %N A104466 a(n) is the least k with n distinct prime factors such that the sum of its prime factors (counting multiplicity) divides k, or 0 if no such k exists. First member of A036844 with n distinct prime factors. %C A104466 A001221(a(n)) = n; A001414(a(n)) divides a(n). a(4) = 840; A086487(4) = 1122. This is probably the only difference between these two sequences. %e A104466 a(4) = 840 = 2^3*3*5*7; 2+2+2+3+5+7 = 21 divides 840. %Y A104466 Cf. A001414, A001221, A086487, A104465. %K A104466 nonn,less %O A104466 1,1 %A A104466 _David Wasserman_, Mar 09 2005