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 A094522 #5 Mar 17 2023 02:23:15 %S A094522 1,1,1,2,1,3,1,4,3,2,1,6,1,7,3,8,1,9,1,4,3,2,1,12,5,2,9,14,1,6,1,16,3, %T A094522 2,7,18,1,2,3,8,1,21,1,4,9,2,1,24,7,10,3,4,1,27,5,28,3,2,1,12,1,2,9, %U A094522 32,5,6,1,4,3,14,1,36,1,2,15,4,7,6,1,16,27,2,1,42,5,2,3,8,1,18,7,4,3,2,5,48 %N A094522 a(n) = gcd(n, A064802(n)). %e A094522 a(18) = gcd(18,27) = 9. %Y A094522 Cf. A064802, A094521. %K A094522 easy,nonn %O A094522 1,4 %A A094522 _Marc LeBrun_, May 06 2004