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 A018271 #18 Jul 08 2025 06:34:41 %S A018271 1,2,3,4,6,8,9,12,18,24,36,72 %N A018271 Divisors of 72. %H A018271 <a href="/index/Di#divisors">Index entries for sequences related to divisors of numbers</a> %t A018271 Divisors[72] (* _Vladimir Joseph Stephan Orlovsky_, Feb 16 2012 *) %o A018271 (PARI) divisors(72) \\ _Charles R Greathouse IV_, Jun 21 2017 %Y A018271 Cf. A018259, A018261. %K A018271 nonn,fini,full,easy %O A018271 1,2 %A A018271 _N. J. A. Sloane_