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 A004059 M0949 #20 Oct 24 2023 06:19:00 %S A004059 1,2,4,5,6,8,9,11,13,14,15,17,18,20,22,23,24,26,28,29,30,32,34,35,36, %T A004059 38,40,41,42,43,45,47,48,50,51,53,55,56,57,59,60,61,64 %N A004059 a(n) gives position of first n in A057561. %D A004059 R. L. Graham et al., On extremal density theorems for linear forms, pp. 103-109 of H. Zassenhaus, editor, Number Theory and Algebra. Academic Press, NY, 1977. %D A004059 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A004059 Steven R. Finch, <a href="/FinchTriple.html">Triple-Free Sets of Integers</a> [From Steven Finch, Apr 20 2019] %Y A004059 Cf. A057561, A094708. %K A004059 nonn %O A004059 1,2 %A A004059 _N. J. A. Sloane_ %E A004059 Edited by _Steven Finch_, Feb 25 2009 %E A004059 Revised by _N. J. A. Sloane_, Jun 13 2012 %E A004059 a(21) corrected and more terms from _Sean A. Irvine_, Nov 18 2015