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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.

A093705 Numbers that are divisible by the total number of 1's in the binary expansions of all their divisors.

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%I A093705 #16 Sep 08 2022 08:45:13
%S A093705 1,2,3,6,8,24,27,45,49,54,55,77,90,98,108,110,128,154,180,189,209,216,
%T A093705 299,324,360,378,384,392,418,425,440,448,598,616,689,765,783,850,855,
%U A093705 864,880,891,896,931,972,1023,1040,1056,1160,1188,1200,1209,1215,1378
%N A093705 Numbers that are divisible by the total number of 1's in the binary expansions of all their divisors.
%C A093705 Numbers of the form 2^(2^k-1) (A058891) are terms of this sequence since A093653(2^(2^k-1)) = 2^k. - _Amiram Eldar_, Oct 31 2020
%H A093705 Amiram Eldar, <a href="/A093705/b093705.txt">Table of n, a(n) for n = 1..10000</a>
%e A093705 a(5) = 8 because the divisors of 8 in binary are: 1, 10, 100, 1000, with four 1's and 8/4 = 2.
%t A093705 Select[Range[1500], Divisible[#, Plus @@ DigitCount[Divisors[#], 2, 1]] &] (* _Amiram Eldar_, Dec 16 2019 *)
%o A093705 (Magma) f:=func< n|&+[&+Intseq(d,2):d in Divisors(n)]>; [k:k in [1..1500]| k mod f(k) eq 0]; // _Marius A. Burtea_, Dec 16 2019
%Y A093705 Cf. A093653.
%Y A093705 A058891 is a subsequence.
%K A093705 easy,base,nonn
%O A093705 1,2
%A A093705 _Jason Earls_, May 17 2004