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Search: id:A072147
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| A072147 |
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Records for the length of the preperiodic part of the 'Reverse and Subtract' trajectories. |
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+0
3
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| 0, 1, 2, 6, 7, 12, 13, 18, 25, 40, 45, 47, 48, 49, 55, 56, 60, 62, 63, 64, 66, 71, 72, 75, 78, 81, 106, 108, 111, 112, 114, 115, 119, 121, 122, 130, 132, 133, 135, 147, 148, 149, 151, 156
(list; graph; listen)
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OFFSET
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1,3
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COMMENT
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Successive maxima in sequence A072137. A072146 gives the corresponding starting points. - This sequence is a weak analogue of A065199, which uses 'Reverse and Add'.
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EXAMPLE
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6 is a record, since the preperiodic part of the trajectory of 13 has length 6 and for k < 13 the preperiodic part has a smaller length (at most 2).
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CROSSREFS
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Cf. A072137, A072146, A065199.
Sequence in context: A145489 A051678 A079906 this_sequence A124319 A078471 A127406
Adjacent sequences: A072144 A072145 A072146 this_sequence A072148 A072149 A072150
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KEYWORD
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base,more,nonn
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AUTHOR
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Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Jun 24 2002
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EXTENSIONS
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a(18) inserted, a(25) corrected, a(29) through a(44) added by Alexander Pesch (alex-physics(AT)gmx.net), May 29 2007
Edited by N. J. A. Sloane (njas(AT)research.att.com), Dec 01 2007
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