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Search: id:A087225
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| A087225 |
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Position of the largest peak value in 3x+1 trajectory. |
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+0
1
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| 1, 1, 4, 1, 2, 5, 6, 1, 9, 3, 4, 6, 2, 7, 8, 1, 2, 10, 4, 1, 2, 5, 6, 1, 7, 3, 78, 8, 2, 9, 73, 1, 2, 3, 4, 11, 2, 5, 11, 1, 76, 3, 4, 6, 2, 7, 71, 1, 2, 8, 4, 1, 2, 79, 79, 1, 7, 3, 9, 10, 2, 74, 74, 1, 2, 3, 4, 1, 2, 5, 69, 1, 82, 3, 4, 6, 2, 12, 8, 1, 2, 77, 77, 1, 2, 5, 6, 1, 7, 3, 59, 8, 2, 72, 72, 1
(list; graph; listen)
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OFFSET
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1,3
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EXAMPLE
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n=9:iteration-list={9,28,14,7,22,11,34,17,52,26,13,40,20,10,5,16,8,4,2,1};
peak=52 at 9th position, so a(9)=9.
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CROSSREFS
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Cf. A025586.
Sequence in context: A125560 A046573 A006287 this_sequence A076064 A016685 A141332
Adjacent sequences: A087222 A087223 A087224 this_sequence A087226 A087227 A087228
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KEYWORD
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nonn
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AUTHOR
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Labos E. (labos(AT)ana.sote.hu), Aug 27 2003
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