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A132946
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Trajectory of 13 under map n -> A132948(n).
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3
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13, 20, 35, 37, 39, 83, 86, 221, 276, 198, 303, 222, 466, 368, 417, 1439, 1334, 1831, 7841, 4710, 6486, 5900, 4853, 2240, 1237, 5039, 4903, 7927, 20253, 13404, 24127, 46007, 43014, 259691, 607337, 453941, 474549, 1741702, 1866968, 15077819, 138558473, 478592581
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OFFSET
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0,1
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COMMENTS
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13 is the smallest number that does not belong to a cycle with elements <= 260000. Further numbers that do not belong to a cycle with elements <= 260000 and do not occur in the trajectory of a smaller number are 15, 32, 45, 59, 72, 76, 81, 85, 95, ... .
Conjecture: Sequence is not periodic.
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LINKS
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EXAMPLE
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PROG
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(C++) See Links section.
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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