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Search: id:A121507
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| A121507 |
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Conjectured list of numbers whose aliquot sequence eventually reaches a cycle of length two or more. |
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+0
9
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| 220, 284, 562, 1064, 1184, 1188, 1210, 1308, 1336, 1380, 1420, 1490, 1604, 1690, 1692, 1772, 1816, 1898, 2008, 2122, 2152, 2172, 2362, 2542, 2620, 2630, 2652, 2676, 2678, 2856, 2924, 2930, 2950, 2974, 3124, 3162, 3202, 3278, 3286, 3332, 3350, 3360
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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For some numbers the outcome of the aliquot sequence is unknown. Currently, 276 is the least such.
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CROSSREFS
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Cf. A008892, A063769, A063990, A072890, A072891, A098007, A121508.
Sequence in context: A157645 A157673 A064477 this_sequence A063990 A157107 A135807
Adjacent sequences: A121504 A121505 A121506 this_sequence A121508 A121509 A121510
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KEYWORD
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nonn
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AUTHOR
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Joshua Zucker (joshua.zucker(AT)stanfordalumni.org), Aug 04 2006
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EXTENSIONS
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Edited by Don Reble (djr(AT)nk.ca), Aug 15 2006
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