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 A248898 #16 Aug 06 2021 00:46:02 %S A248898 0,2,4,6,9,11,13,15,17,19,23,25,27,29,32,34,36,38,40,42,46,48,50,52, %T A248898 55,59,61,63,65,69,71,73,75,77,79,82,84,86,88,90,92,96,98,100,102,105, %U A248898 107,109,111,113,115,119,121,123,125,128,132,134,136,138,142,144,146,148,150 %N A248898 Numbers k such that A246964(k) = 1. %H A248898 Alois P. Heinz, <a href="/A248898/b248898.txt">Table of n, a(n) for n = 1..10000</a> %Y A248898 Cf. A246964. %K A248898 nonn %O A248898 1,2 %A A248898 _Floor van Lamoen_, Mar 06 2015