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%I #28 Mar 18 2023 16:55:38
%S 552,888,1392,2328,3552,6024,9096,13704,20616,30984,46536,86904,
%T 165816,367704,628356,837836,628384,630356,491884,368920,499400,
%U 772840,978650,975652,744248,696712,628628,857836,857892,1472268
%N Aliquot sequence starting at 552.
%D R. K. Guy, Unsolved Problems in Number Theory, B6.
%H Tyler Busby, <a href="/A014360/b014360.txt">Table of n, a(n) for n = 0..1142</a> (terms 0..352 from T. D. Noe)
%H Christophe Clavier, <a href="http://christophe.clavier.free.fr/Aliquot/site/Aliquot.html">Aliquot Sequences</a>
%H Paul Zimmermann, <a href="http://www.loria.fr/~zimmerma/records/aliquot.html">Latest information</a>
%H <a href="/index/Al#ALIQUOT">Index entries for sequences related to aliquot parts</a>.
%F a(n+1) = A001065(a(n)). - _R. J. Mathar_, Oct 11 2017
%t FixedPointList[If[# > 0, DivisorSigma[1, #] - #, 0]&, 552, 100] (* _Jean-François Alcover_, Mar 28 2020 *)
%o (PARI) a(n, a=552)={for(i=1, n, a=sigma(a)-a); a} \\ _M. F. Hasler_, Feb 24 2018
%Y Cf. A001065, A098007 (length of aliquot sequences).
%Y Some other examples: A008885 (starting at 30) .. A008892 (starting at 276), A014361 (starting at 564) .. A014365 (starting at 1134), see link to index for a more complete list.
%K nonn
%O 0,1
%A _Paul Zimmermann_
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