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 A157846 #3 Mar 30 2012 19:00:15 %S A157846 1,2,3,4,6,7,8,9,10,12,13,14,15,16,18,19,20,21,22,24,26,27,28,30,31, %T A157846 32,33,34,35,36,37,38,39,40,42,44,45,48,49,51,52,54,55,56,57,60,61,62, %U A157846 63,64,65,66,68,69,70,72,74,75 %N A157846 Numbers which can be a mean of the divisors of some arithmetic number A003601(k). %C A157846 This is A102187 sorted and duplicates removed. %Y A157846 Cf. A102187, A003601, A000203, A000005, A157847. %K A157846 nonn %O A157846 1,2 %A A157846 _Jaroslav Krizek_, Mar 07 2009 %E A157846 Edited by _R. J. Mathar_, Mar 15 2009