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 A058826 #16 Aug 28 2022 21:11:46 %S A058826 14,38,62,68,74,76,90,94,98,114,118,124,142,152,158,174,182,188,194, %T A058826 214,230,234,236,242,246,248,254,258,278,284,286,302,304,308,314,318, %U A058826 322,334,338,350,354,364,370,374,376,390,398,402,406,410,414,422,426 %N A058826 Even cototient numbers which are nontotients. %H A058826 Donovan Johnson, <a href="/A058826/b058826.txt">Table of n, a(n) for n = 1..10000</a> %F A058826 Intersection(A058817, A005277). %e A058826 14 is a nontotient number but it is cototient of 26: 14 = 26 - phi(26). %Y A058826 Cf. A000010, A051953, A005277, A005278, A002020, A058763, A058817. %K A058826 nonn %O A058826 1,1 %A A058826 _Labos Elemer_, Jan 04 2001