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 A272533 #10 Jun 02 2025 12:18:36
%S A272533 16,20,24,28,32,36,40,42,44,48,52,54,56,60,64,66,68,72,76,78,80,81,84,
%T A272533 88,90,92,96,99,100,102,104,108,110,112,114,116,117,120,124,126,128,
%U A272533 130,132,135,136,138,140,144,148,150,152,153,156,160,162,164,168,170,171
%N A272533 Numbers n such that A072499(n)!=A072504(n).
%H A272533 Benedict W. J. Irwin, <a href="/A272533/b272533.txt">Table of n, a(n) for n = 1..5600</a>
%e A272533 A072499(16) = 8 != A072504(16) = 4.
%o A272533 (PARI) isok(n) = { my(dd = select(x->x <= sqrt(n), divisors(n))); lcm(dd) != prod(k=1, #dd, dd[k]);} \\ _Michel Marcus_, May 06 2016
%Y A272533 Cf. A072499, A072504
%K A272533 nonn
%O A272533 1,1
%A A272533 _Benedict W. J. Irwin_, May 02 2016