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 A081525 #7 Nov 12 2019 23:46:57 %S A081525 1,5,13,77,87,223,481,4609,4861,55991,58301 %N A081525 Erroneous version of A027612. %F A081525 a(n) = A001705(n) / gcd(A001705(n), n!). Note: A001705 starts with n=0. - _Martin Fuller_, Jan 03 2006 %Y A081525 Cf. A001705. %K A081525 dead %O A081525 1,2 %E A081525 Corrected and extended by _Martin Fuller_, Jan 03 2006