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 A336558 #10 Jul 27 2020 21:09:46 %S A336558 10,21,22,30,33,34,35,40,42,46,52,55,57,58,65,66,69,70,77,82,84,85,88, %T A336558 90,91,93,94,98,102,105,106,110,114,115,118,119,120,129,130,132,133, %U A336558 135,136,138,140,141,142,145,152,154,155,156,160,161,164,165,166,168,170,174,177,178,182,184,185,186,187,189,190 %N A336558 Numbers k such that A336456(n) is not equal to Product_{p^e|n} A336456(p^e). Here each p^e is the maximal power of prime p that divides k, and A336456(n) = A335915(sigma(sigma(n))). %C A336558 Numbers at which points A336456 is not multiplicative. %C A336558 Note that in contrast to A051027 (case in A336548), here Product_{p^e|n} A336456(p^e) can be also less than A336456(n), not just greater than or equal. %H A336558 Antti Karttunen, <a href="/A336558/b336558.txt">Table of n, a(n) for n = 1..25000</a> %Y A336558 Cf. A335915, A336546, A336557 (complement), A336559. %Y A336558 Subsequence of A336548. %K A336558 nonn %O A336558 1,1 %A A336558 _Antti Karttunen_, Jul 25 2020