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 A083361 #13 Feb 23 2019 02:17:47 %S A083361 21372,119911,229912,2971137,13731373,31373137,183171409,221397372, %T A083361 241153517,254724772,271141332,331191135,1153115117,1190911909, %U A083361 1453312395,2511176437,2923699119,2971193115,3124516195,3211433715 %N A083361 Subsequence of sequence A083359 in which every prime factor can be found in the number at least as often as it is factor of the number. %H A083361 Deron Stewart, <a href="/A083361/b083361.txt">Table of n, a(n) for n = 1..27</a> %e A083361 221397372 = 2*2*3*3*7*397*2213. %Y A083361 Cf. A083359, A083360. %K A083361 nonn,base %O A083361 1,1 %A A083361 _Sven Simon_, Apr 27 2003 %E A083361 Offset corrected by _Deron Stewart_, Feb 21 2019