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 A030634 #28 Oct 19 2024 15:57:32 %S A030634 120,168,210,216,264,270,280,312,330,378,384,390,408,440,456,462,510, %T A030634 520,546,552,570,594,616,640,680,690,696,702,714,728,744,750,760,770, %U A030634 798,858,870,888,896,910,918,920,930,945,952,966,984,1000 %N A030634 Numbers with 16 divisors. %C A030634 Numbers of the form p^15 (subset of A010803), p*q^7, p*q*r^3 or p^3*q^3, or p*q*r*s, where p, q, r and s are distinct primes. - _R. J. Mathar_, Mar 01 2010 %H A030634 R. J. Mathar, <a href="/A030634/b030634.txt">Table of n, a(n) for n = 1..1000</a> %H A030634 Jérôme Germoni, <a href="http://images-archive.math.cnrs.fr/Nombres-a-huit-diviseurs.html">Nombres à huit diviseurs</a>, Images des Mathématiques, CNRS, 2017 (in French). %t A030634 Select[Range[3000],DivisorSigma[0,#]==16&] (* _Vladimir Joseph Stephan Orlovsky_, May 05 2011 *) %o A030634 (PARI) is(n)=numdiv(n)==16 \\ _Charles R Greathouse IV_, Jun 19 2016 %o A030634 (Magma) [n: n in [1..1000] | DivisorSigma(0, n) eq 16]; // _Vincenzo Librandi_, Oct 05 2017 %Y A030634 Cf. A030626, A030631, A030632, A030633. %K A030634 nonn %O A030634 1,1 %A A030634 _Jeff Burch_