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 A228585 #14 Dec 23 2024 14:53:43 %S A228585 1,29,49,69,89,219,239,259,279,419,439,459,479,619,639,659,679,819, %T A228585 839,859,879,2110,2130,2150,2170,2190,2310,2330,2350,2370,2390,2510, %U A228585 2530,2550,2570,2590,2710,2730,2750,2770,2790,2910,2930,2950,2970,2990,4110,4130 %N A228585 Untouched numbers in the removal process of A228584. %H A228585 Paul Tek, <a href="/A228585/b228585.txt">Table of n, a(n) for n = 1..10000</a> %H A228585 Eric Angelini et al., <a href="https://web.archive.org/web/*/http://list.seqfan.eu/oldermail/seqfan/2013-August/011621.html">Champernowne sieved</a> and follow-up messages on the SeqFan list, Aug 26 2013 %H A228585 Paul Tek, <a href="/A228585/a228585.txt">PERL program for this sequence</a> %Y A228585 Cf. A033307, A228584. %K A228585 nonn,base %O A228585 1,2 %A A228585 _Alois P. Heinz_, Aug 26 2013