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 A368496 #16 Dec 28 2023 13:09:51 %S A368496 30,35,42,70,105,110,130,143,154,165,182,195,210,221,238,255,266,285, %T A368496 286,323,330,357,374,385,390,391,399,418,429,437,442,455,462,483,494, %U A368496 506,510,546,570,595,598,609,638,646,663,665,667,682,690,713,714,715,754 %N A368496 Squarefree numbers k such that A368207(k^2) <> k+(sigma(k^2)-1)/2. %C A368496 Sequence suggested by the observation that A368207(k^2) = k+(sigma(k^2)-1)/2 for many numbers k. %H A368496 Chai Wah Wu, <a href="/A368496/b368496.txt">Table of n, a(n) for n = 1..1071</a> %Y A368496 Cf. A005117, A065764, A368207. %K A368496 nonn %O A368496 1,1 %A A368496 _Chai Wah Wu_, Dec 27 2023