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 A228363 #11 Jul 22 2020 11:42:35 %S A228363 4,6,6,8,8,9,10,10,12,12,12,12,14,14,15,15,16,16,16,18,18,18,18,20,20, %T A228363 20,20,21,21,22,22,24,24,24,24,24,24,25,26,26,27,27,28,28,28,28,30,30, %U A228363 30,30,30,30,32,32,32,32,33,33,34,34,35,35,36,36,36,36,36,36,36,38,38,39,39,40,40,40,40 %N A228363 Sorted entries of the multiplication table a*b, with a>1, b>1. %C A228363 Consists of the composite numbers (A002808), with the composite nonsquares (A089229) occurring more than once, i.e., the n-th composite appears A144925(n) times. %C A228363 A complement of the primes (A000040). %o A228363 (PARI) L=listcreate();for(k=2,250,for(l=2,250,listput(L,k*l)));v=vecsort(Vec(L));for(n=1,100,print1(v[n],",")) %Y A228363 Cf. A061017 (sorted entries of standard multiplication table) %K A228363 nonn %O A228363 1,1 %A A228363 _Ralf Stephan_, Aug 21 2013