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 A295307 #12 Jul 24 2021 23:12:19 %S A295307 3,5,6,7,10,11,13,14,15,17,19,20,21,22,23,24,26,27,28,29,30,31,33,34, %T A295307 35,37,38,39,40,41,42,43,44,45,46,47,49,51,52,53,54,55,56,57,58,59,60, %U A295307 61,62,63,65,66,67,68,69,70,71,73,74,75,76,77,78,79,80,82,83,85,86,87,88,89,90,91,92,93,94,95,96,97,99,101 %N A295307 Numbers k such that k > phi(sigma(k)), where phi = A000010 and sigma = A000203. %H A295307 Antti Karttunen, <a href="/A295307/b295307.txt">Table of n, a(n) for n = 1..10000</a> %F A295307 Numbers k such that A295301(k) > 0. %t A295307 Select[Range@ 101, # > EulerPhi@ DivisorSigma[1, #] &] (* _Michael De Vlieger_, Nov 22 2017 *) %Y A295307 Cf. A000010, A000203, A062401, A295309 (characteristic function). %Y A295307 Positions of positive terms in A295301 & A295303. %Y A295307 Differs from A073803 for the first time at n=39, as here a(39) = 52, the value which does not occur in A073803. %K A295307 nonn %O A295307 1,1 %A A295307 _Antti Karttunen_, Nov 21 2017