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