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 A253060 #7 May 21 2019 03:05:31 %S A253060 1,3,4,7,9,13,14,15,17,18,19,20,25,28,29,31,33,34,36,37,41,43,44,45, %T A253060 48,49,50,51,52,54,57,63,64,67,68,75,77,79,82,83,84,88,89,91,92,93,95, %U A253060 97,99,100,101,102,103,104,107,110,112,113,116,117,118,120,125,126,127,128 %N A253060 Indices of 0's in Ehrenfeucht-Mycielski sequence A038219. %C A253060 Also positions of 1's in A007061. %H A253060 Rémy Sigrist, <a href="/A253060/b253060.txt">Table of n, a(n) for n = 1..25000</a> %Y A253060 Cf. A007061, A038219, A253061. %K A253060 nonn %O A253060 1,2 %A A253060 _N. J. A. Sloane_, Jan 18 2015