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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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2
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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; refs; listen; history; internal format)
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OFFSET
| 1,3
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COMMENTS
| 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
| 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
| Cf. A072137, A072146, A065199.
Sequence in context: A079906 A189327 A172154 * A190121 A124319 A078471
Adjacent sequences: A072144 A072145 A072146 * A072148 A072149 A072150
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KEYWORD
| base,more,nonn
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AUTHOR
| Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Jun 24 2002
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EXTENSIONS
| 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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