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Search: id:A057691
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| A057691 |
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Number of terms before entering cycle in trajectory of P under the `Px+1' map, where P = n-th prime, or -1 if trajectory does not cycle. |
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+0
8
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| 5, 13, 4, 10, 25, 11, 68, 14, 39, 34, 9, 4, 5, 5, 16, 16, 234, 23, 16, 5, 11, 5, 63, 116, 18, 18, 33, 288, 47, 29, 317, 14, 12, 61, 60, 6, 16, 10, 5, 14, 46, 5, 6, 15, 105, 4, 11, 48, 44, 5, 6, 10, 5, 55, 15, 14, 25, 17, 9, 16, 6, 7, 26, 5, 33, 46, 5, 16, 23, 13, 15, 11, 16, 14, 11
(list; graph; listen)
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OFFSET
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2,1
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COMMENT
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See A057684 for definition.
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LINKS
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T. D. Noe, Table of n, a(n) for n=2..1000
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EXAMPLE
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For n=3, P=7: trajectory of 7 is 7, 50, 25, 5, 1, 8, 4, 2, 1, 8, 4, 2, 1, 8, 4, 2, 1, ..., which has maximal term 50, cycle length 4 and there are 4 terms before it enters the cycle.
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CROSSREFS
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Cf. A057446, A057216, A057522, A057534, A057614. See also A033478, A057688, A057684, A057685, A057686, A057687, A057689, A057690.
Sequence in context: A065865 A088618 A121645 this_sequence A089619 A094473 A068530
Adjacent sequences: A057688 A057689 A057690 this_sequence A057692 A057693 A057694
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KEYWORD
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nonn,nice,easy
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Oct 20 2000
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EXTENSIONS
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More terms from Larry Reeves (larryr(AT)acm.org), Nov 08 2000
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