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 A346423 #25 Aug 22 2021 01:33:06
%S A346423 11,230,52830,160908,6134334960
%N A346423 Numbers m such that Sum_{k=1..m} omega(k) = sigma(m).
%C A346423 Numbers k such that A013939(k) = sigma(k).
%e A346423 The sum of number of distinct primes dividing numbers up to 11 is 1+1+1+1+2+1+1+1+2+1 = sigma(11), so 11 is a term.
%t A346423 s=0;Do[s=s+PrimeNu[n];If[DivisorSigma[1,n]==s,Print[n]],{n,2,160908}]
%Y A346423 Cf. A000203, A013939.
%K A346423 nonn,more
%O A346423 1,1
%A A346423 _Metin Sariyar_, Jul 16 2021
%E A346423 a(5) from _Martin Ehrenstein_, Aug 22 2021