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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.

A344732 Numbers k such that k divides Sum_{j=1..k} A048105(j).

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%I A344732 #7 May 28 2021 00:55:43
%S A344732 1,2,3,54,58,62,71,10535,10541,10579,135242,135243,1733777,1733781,
%T A344732 1733895,1733905,1733999,22216757,22216765,22216790,22216808,22216814,
%U A344732 46745561148,46745561156
%N A344732 Numbers k such that k divides Sum_{j=1..k} A048105(j).
%C A344732 The corresponding quotients Sum_{j=1..k} A048105(j)/k are 0, 0, 0, 1, 1, 1, 1, 3, 3, 3, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 9, 9, ...
%C A344732 a(25) > 7.5*10^10, if it exists.
%e A344732 a(1) = 1 since A048105(1) = 0 is divisible by 1.
%e A344732 a(4) = 54 since Sum_{j=1..54} A048105(j) = 54 is divisible by 54.
%t A344732 s[1] = 0; s[n_] := s[n] = s[n - 1] + DivisorSigma[0, n] - 2^PrimeNu[n]; Select[Range[140000], Divisible[s[#], #] &]
%Y A344732 Cf. A048105.
%Y A344732 The non-unitary version of A050226.
%Y A344732 Similar sequences: A064610, A344731, A344733.
%K A344732 nonn,more
%O A344732 1,2
%A A344732 _Amiram Eldar_, May 27 2021