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 A347248 #7 Aug 30 2021 09:38:20
%S A347248 2,3,4,5,6,7,8,10,11,12,13,14,15,16,17,19,20,21,22,23,24,26,28,29,30,
%T A347248 31,32,33,34,35,37,38,39,40,41,42,43,44,46,47,48,51,52,53,55,56,57,58,
%U A347248 59,60,61,62,64,65,66,67,68,69,70,71,73,74,76,77,78,79,80,82,83,84,85,86,87,88,89,91,92,93,94,95,96
%N A347248 Numbers k such that the greatest prime factor of A000593(k) [the sum of odd divisors of k] is less than the greatest prime factor of k itself.
%C A347248 a(126) = 153 is the first term that is not present in A122132.
%F A347248 {k such that A006530(A000593(k)) < A006530(k)}.
%Y A347248 Cf. A000593, A006530.
%Y A347248 Positions of zeros in A347246 (which is the characteristic function of the complementof this sequence, A347247).
%Y A347248 Apart from its initial 1, A347243 is a subsequence of this sequence.
%Y A347248 Cf also A122132.
%K A347248 nonn
%O A347248 1,1
%A A347248 _Antti Karttunen_, Aug 28 2021