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Search: id:A143091
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| A143091 |
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Chaotic sequence: f(n) = f(Floor[2*n/3]) + f(Floor[n/3]). |
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+0
2
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| 1, 1, 2, 3, 3, 4, 5, 5, 6, 8, 8, 8, 9, 9, 11, 12, 12, 12, 14, 14, 14, 16, 16, 17, 18, 18, 18, 22, 22, 22, 22, 22, 24, 24, 24, 25, 27, 27, 27, 27, 27, 31, 33, 33, 33, 34, 34, 34, 36, 36, 36, 36, 36, 37, 41, 41, 41, 41, 41, 41, 41, 41, 45, 49, 49, 49, 49, 49, 50, 51, 51, 51, 54, 54
(list; graph; listen)
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OFFSET
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1,3
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FORMULA
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f(n) = f(Floor[2*n/3]) + f(Floor[n/3]).
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MATHEMATICA
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Clear[a, f, b, c, g] (*fractal noise chaotic sequence*) f[0] = 1; f[1] = 0; f[1] = 1; f[n_] := f[n] = f[n - f[n - 1]] + f[Floor[2*n/3]] (*Cantor like fractal stair step chaotic sequence*) g[0] = 1; g[1] = 0; g[1] = 1; g[n_] := g[n] = g[Floor[2*n/3]] + g[Floor[n/3]]; ListPlot[Table[{f[n], g[n]}, {n, 0, 200}], PlotJoined -> True]; Table[g[n], {n, 0, 200}]
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CROSSREFS
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Adjacent sequences: A143088 A143089 A143090 this_sequence A143092 A143093 A143094
Sequence in context: A076874 A127041 A127039 this_sequence A114539 A007998 A029931
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KEYWORD
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nonn,uned
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AUTHOR
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Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Oct 16 2008
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