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 A123529 #11 Jul 19 2019 20:26:40
%S A123529 1,1,1,1,2,1,1,1,2,1,3,1,2,1,1,1,3,1,1,1,2,1,4,1,2,1,3,1,3,1,1,1,2,1,
%T A123529 2,1,2,1,4,1,1,1,1,3,2,1,5,1,1,1,3,1,4,1,4,1,2,1,1,1,2,3,1,1,3,1,1,1,
%U A123529 3,1,5,1,2,3,3,1,1,1,5,1,2,1,2,1,2,1,4,1,4,1,1,1,2,1,6,1,3,3,2,1,3,1,4,1,2
%N A123529 Denominator of average of prime factors of n.
%C A123529 Prime factors counted with multiplicity. - _Harvey P. Dale_, Jun 20 2013
%C A123529 Positions of 1's are A078175. a(n) is a divisor of Omega(n) = A001222(n). The average of prime indices (as opposed to prime factors) of n is A326567(n)/A326568(n). - _Gus Wiseman_, Jul 18 2019
%H A123529 G. C. Greubel, <a href="/A123529/b123529.txt">Table of n, a(n) for n = 2..5000</a>
%t A123529 Table[Denominator[Mean[Flatten[Table[#[[1]],{#[[2]]}]&/@ FactorInteger[ n]]]],{n,110}] (* _Harvey P. Dale_, Jun 20 2013 *)
%Y A123529 See A123528 for more formulas and references.
%Y A123529 Cf. A078174, A078175, A112798, A316413, A326567/A326568, A326619/A326620, A326621.
%K A123529 frac,nonn
%O A123529 2,5
%A A123529 _Franklin T. Adams-Watters_, Oct 02 2006