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 A014364 Aliquot sequence starting at 1074. 4
 1074, 1086, 1098, 1320, 3000, 6360, 13080, 26520, 64200, 136680, 303960, 668040, 1448760, 2897880, 6778920, 14760600, 31761720, 75003840, 189623520, 475142400, 1262108388, 1723154620, 2250655556, 1742856988 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 REFERENCES Richard K. Guy, Unsolved Problems in Number Theory, 3rd Edition, Springer, 2004, Section B6, pp. 92-95. LINKS Amiram Eldar, Table of n, a(n) for n = 0..2194 (terms 0..881 from R. J. Mathar) Christophe Clavier, Aliquot Sequences. factordb.com, Aliquot sequence of 1074. Paul Zimmermann, Latest information. Index entries for sequences related to aliquot parts. FORMULA a(n+1) = A000203(a(n))-a(n). - R. J. Mathar, Oct 08 2017 MATHEMATICA FixedPointList[If[# > 0, DivisorSigma[1, #] - #, 0] &, 1074, 100] (* Jean-François Alcover, Mar 28 2020 *) PROG (PARI) a(n, a=1074)={for(i=1, n, a=sigma(a)-a); a} \\ M. F. Hasler, Feb 24 2018 CROSSREFS Cf. A098007 (length of aliquot sequences). Some other examples: A008885 (starting at 30) .. A008892 (starting at 276), A014360 (starting at 552) .. A014365 (starting at 1134), ..., A171103 (starting at 46758). See link to index for a more complete list. Cf. A000203. Sequence in context: A085338 A250636 A329148 * A031779 A336781 A237213 Adjacent sequences: A014361 A014362 A014363 * A014365 A014366 A014367 KEYWORD nonn AUTHOR Paul Zimmermann STATUS approved

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Last modified April 15 12:18 EDT 2024. Contains 371686 sequences. (Running on oeis4.)