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 A330736 #10 Jul 03 2021 07:17:37 %S A330736 21,24,42,69,84,105,115,120,138,168,171,201,207,210,225,230,276,301, %T A330736 329,342,345,402,407,414,420,450,451,460,473,483,505,515,602,603,605, %U A330736 639,658,684,690,759,804,805,814,828,840,855,869,891,897,900,902,903,913,920,946,966,987,1005,1010,1030,1035,1173,1197 %N A330736 Numbers k such that k is not a multiple of A309639(k), where A309639(k) is the index of the least harmonic number H_i whose denominator (A002805) is divisible by k. %H A330736 Antti Karttunen, <a href="/A330736/b330736.txt">Table of n, a(n) for n = 1..2366</a> %Y A330736 Positions of nonzero terms in A330735. %Y A330736 Cf. A002805, A309639. %K A330736 nonn %O A330736 1,1 %A A330736 _Antti Karttunen_, Jan 10 2020