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Search: id:A075487
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| A075487 |
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Length of iteration list when Collatz-function is iterated with initial value 1+3^n. |
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+0
4
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| 3, 7, 19, 111, 22, 96, 33, 76, 75, 43, 135, 134, 133, 132, 144, 205, 129, 190, 140, 95, 94, 261, 428, 91, 258, 394, 331, 255, 254, 390, 389, 388, 462, 461, 460, 459, 458, 457, 456, 455, 454, 453, 501, 500, 450, 498, 497, 752, 495, 494, 493, 748, 491, 746, 489
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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n=2,1+3^n=10,list={10,5,16,8,4,2,1}, so a(2)=7
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FORMULA
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a(n)=A008908(3^n+1)
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CROSSREFS
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Cf. A006370, A008908, A074472, A075484-A075488.
Sequence in context: A163571 A146037 A128024 this_sequence A118128 A113875 A111974
Adjacent sequences: A075484 A075485 A075486 this_sequence A075488 A075489 A075490
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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), Sep 26 2002
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