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 A062957 #9 Apr 13 2024 12:28:10 %S A062957 0,2,3,12,5,49,7,56,36,109,11,243,13,193,169,240,17,502,19,539,289, %T A062957 433,23,1039,150,589,351,955,29,1879,31,992,625,973,529,2400,37,1201, %U A062957 841,2287,41,3369,43,2147,1693,1729,47,4263,392,2924,1369,2923,53,4669 %N A062957 a(n) = C(n^2) - C(n), where C(n) is Chowla's function (A048050). %o A062957 (PARI) C(n)=sigma(n)-n-1; j=[]; for(n=1,150,j=concat(j,C(n^2)-C(n))); j %Y A062957 Cf. A048050. %K A062957 easy,nonn %O A062957 1,2 %A A062957 _Jason Earls_, Jul 22 2001