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A074907
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Aliquot sequence starting at 570.
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3
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570, 870, 1290, 1878, 1890, 3870, 6426, 10854, 13830, 19434, 20886, 21606, 25098, 26742, 26754, 40446, 63234, 77406, 110754, 171486, 253458, 295740, 647748, 1077612, 1467588, 1956812, 2109796, 1889486, 953914, 668966, 353578, 176792
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,1
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REFERENCES
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R. K. Guy, Unsolved Problems in Number Theory, B6.
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LINKS
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FORMULA
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EXAMPLE
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a(0) = 570, a(1) = sigma(570) - 570 = 870.
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MATHEMATICA
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FixedPointList[If[# > 0, DivisorSigma[1, #] - #, 0]&, 570] // Most (* Jean-François Alcover, Mar 28 2020 *)
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CROSSREFS
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KEYWORD
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nonn,fini,full
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AUTHOR
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Robert A. Stump (bee_ess107(AT)msn.com), Sep 30 2002
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STATUS
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approved
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