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 A176552 #5 Jan 26 2013 13:32:35 %S A176552 1,6,10,12,14,18,20,22,24,26,28,30,34,36,38,40,44,45,46,48,50,52,54, %T A176552 56,58,60,62,63,66,68,70,72,74,75,76,80,82,84,86,88,90,82,94,96,98,99, %U A176552 100 %N A176552 Complement of A174894, where A174894 = numbers such that both arithmetic means of distinct and all prime factors are integers. %C A176552 For these numbers hold that both arithmetic means of distinct and all prime factors are not integers or only one of these means is an integer. %K A176552 nonn %O A176552 1,2 %A A176552 _Jaroslav Krizek_, Apr 20 2010