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 A166247 #3 Mar 30 2012 18:52:34 %S A166247 1,1,2,3,5,6,9,12,14,16,23,25,29,34,39,44,52,55,65,69,73,80,99,105, %T A166247 105,115,129,132,152,151,168,183,187,200,221,224,234,251,272,278,298, %U A166247 297,326,336,347,361,404,422,416,428,452,462,506,512,532,540,556,581,636 %N A166247 Number of perfect partitions of n-1 plus sum of remainders of n mod k, for k=1,2,3,..,n. %F A166247 a(n)=A002033(n-1)+A004125(n). %Y A166247 Cf. A002033, A004125. %K A166247 nonn,less %O A166247 1,3 %A A166247 _Juri-Stepan Gerasimov_, Oct 10 2009 %E A166247 Indices in definition and formula corrected by _R. J. Mathar_, May 21 2010