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%I #8 Apr 16 2024 14:03:47
%S 13516958630,13662237610,14483820470,16161187910,16266406870,
%T 17187072770,17779204310,18055129190,19265719130,20027984690,
%U 20291032090,20945054548,21036318170,21395831170,21983936030,22134086030,22335605390,23837897510,24709171970,25630894310,26286582910
%N Weird numbers whose abundance is a weird number with weird abundance (A371952).
%C Terms k of A006037 such that A033880(k) and A033880(A033880(k)) are also terms of A006037.
%C Are there numbers k such that k, A033880(k), A033880(A033880(k)), and A033880(A033880(A033880(k))) are all terms of A006037? There are none below 10^11.
%H Amiram Eldar, <a href="/A371953/b371953.txt">Table of n, a(n) for n = 1..146</a> (terms below 10^11)
%H Wikipedia, <a href="https://en.wikipedia.org/wiki/Weird_number">Weird number</a>.
%e 13516958630 is a term because it is a weird number, A033880(13516958630) = sigma(13516958630) - 2*13516958630 = 833308916 is a weird number, and A033880(833308916) = sigma(833308916) - 2*833308916 = 7975928 is also a weird number.
%Y Subsequence of A006037, A371920 and A371952.
%Y Cf. A000203 (sigma), A033880 (abundance).
%K nonn
%O 1,1
%A _Amiram Eldar_, Apr 14 2024
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