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 A007989 #10 Feb 27 2018 23:21:37 %S A007989 2,3,5,6,7,8,9,11,13,14,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31, %T A007989 32,33,37,41,42,43,44,47,49,53,54,55,58,59,61,65,66,67,68,69,70,71,73, %U A007989 75,76,77,79,83,85,87,88,89,91,95,96,97,98,101,103,107,109 %N A007989 Slowest increasing sequence with property that a(n) does not divide any term of form a(n+m*a(n)) for any m; this is the slowest increasing "non-difference-divisible" sequence. %H A007989 Sean A. Irvine, <a href="/A007989/b007989.txt">Table of n, a(n) for n = 0..1000</a> %H A007989 J. Mason, <a href="http://www.jstor.org/stable/40247947">Mathematical Abstraction Seen and a Delicate Shift of Attention</a>, For the learning of Mathematics 9 (2) 1989, pp. 2-8. %H A007989 J. Mason, <a href="http://www.jstor.org/stable/3619818">Difference-Divisible Sequences</a>, Math. Gazette 74 (469) 1990, pp. 223-228. %K A007989 nonn %O A007989 0,1 %A A007989 _John H. Mason_