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 A024413 #7 Jul 09 2019 03:03:44 %S A024413 1,2,4,6,7,8,10,12,13,14,15,19,20,22,25,26,29,30,31,35,36,38,41,43,45, %T A024413 47,48,51,52,56,57,61,62,64,66,68,69,72,73,76,77,78,79,82,83,85,87,88, %U A024413 91,92,93,97,98,101,102,103,106,107,108,111,112,115,116,119,120,124,125,128,129,132,133,137 %N A024413 Positions of odd numbers in A024412. %K A024413 nonn %O A024413 1,2 %A A024413 _Clark Kimberling_ %E A024413 a(23) onward corrected by _Sean A. Irvine_, Jul 08 2019