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 A072825 #33 May 19 2021 20:34:43 %S A072825 5,7,11,19,29,41,71,4159 %N A072825 Numbers k such that k^2 - 1 is a highly composite number. %C A072825 All are primes so far. %Y A072825 Cf. A002182. %K A072825 nonn,more,hard %O A072825 1,1 %A A072825 _Shyam Sunder Gupta_, Jul 21 2002 %E A072825 Edited by _Robert G. Wilson v_, Jul 24 2002