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 A018433 #18 Jul 08 2025 06:48:58 %S A018433 1,2,4,5,8,10,16,20,25,40,50,80,100,200,400 %N A018433 Divisors of 400. %H A018433 <a href="/index/Di#divisors">Index entries for sequences related to divisors of numbers</a> %t A018433 Divisors[400] (* _Vladimir Joseph Stephan Orlovsky_, Feb 21 2012 *) %o A018433 (PARI) divisors(400) \\ _Charles R Greathouse IV_, Jun 21 2017 %Y A018433 Cf. A018391, A018393, A018412, A018425. %K A018433 nonn,fini,full,easy %O A018433 1,2 %A A018433 _N. J. A. Sloane_