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 A024666 #3 Mar 30 2012 18:55:59 %S A024666 2,5,7,9,12,14,15,17,20,22,24,27,29,30,32,36,38,40,41,42,45,48,50,52, %T A024666 53,55,59,61,63,65,66,70,72,75,77,78,79,82,84,86,88,91,92,93,96,98, %U A024666 100,103,106,107,108,109,111,113,115,117,121,123,125,126,129,130,132,133,138,140,142 %N A024666 Positions of odd numbers in A003325. %K A024666 nonn %O A024666 1,1 %A A024666 _Clark Kimberling_