Revision History for A294443
(Underlined text is an addition;
strikethrough text is a deletion.)
Showing entries 1-10
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#29 by R. J. Mathar at Fri Aug 05 07:02:23 EDT 2022
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#28 by R. J. Mathar at Fri Aug 05 07:01:03 EDT 2022
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| LINKS
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Richard R. J. Mathar, <a href="http://www.mpia.de/~mathar/public="/A294443/mathar20171127a294443.pdf">The Kepler binary tree of reduced fractions</a>, 2017.>
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approved
editing
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#27 by Susanna Cuyler at Wed Apr 18 19:56:00 EDT 2018
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#26 by Michael De Vlieger at Wed Apr 18 18:05:12 EDT 2018
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#25 by Michael De Vlieger at Wed Apr 18 18:05:07 EDT 2018
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| DATA
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1, 1, 2, 3, 5, 7, 13, 20, 31, 48, 78, 118, 191, 300, 465, 734, 1175, 1850, 2926, 4597, 7296, 11552, 18278, 28863, 45832, 72356, 114742, 181721
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a(22)-a(2628) from Michael De Vlieger, Apr 18 2018
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proposed
editing
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#24 by Michel Marcus at Wed Apr 18 17:49:33 EDT 2018
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#23 by Michel Marcus at Wed Apr 18 17:49:25 EDT 2018
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| EXAMPLE
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Row 4 of A294442 contains eight fractions,: 1/5, 4/5, 3/7, 4/7, 2/7, 2/7, 3/8, 5/8.
1/5, 4/5, 3/7, 4/7, 2/7, 2/7, 3/8, 5/8.
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proposed
editing
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#22 by Michael De Vlieger at Wed Apr 18 17:46:53 EDT 2018
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#21 by Michael De Vlieger at Wed Apr 18 17:46:47 EDT 2018
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| DATA
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1, 1, 2, 3, 5, 7, 13, 20, 31, 48, 78, 118, 191, 300, 465, 734, 1175, 1850, 2926, 4597, 7296, 11552, 18278, 28863, 45832, 72356
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a(22)-a(2326) from Michael De Vlieger, Apr 18 2018
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#20 by Michael De Vlieger at Wed Apr 18 17:46:21 EDT 2018
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| DATA
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1, 1, 2, 3, 5, 7, 13, 20, 31, 48, 78, 118, 191, 300, 465, 734, 1175, 1850, 2926, 4597, 7296, 11552, 18278
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| LINKS
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Richard J. Mathar, <a href="http://www.mpia.de/~mathar/public/mathar20171127.pdf">The Kepler binary tree of reduced fractions</a>, 2017.
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| MATHEMATICA
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Map[Length@ Union@ Numerator@ # &, #] &@ Nest[Append[#, Flatten@ Map[{#1/(#1 + #2), #2/(#1 + #2)} & @@ {Numerator@ #, Denominator@ #} &, Last@ #]] &, {{1/1}, {1/2}}, 21] (* Michael De Vlieger, Apr 18 2018 *)
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| EXTENSIONS
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a(22)-a(23) from Michael De Vlieger, Apr 18 2018
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| STATUS
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approved
editing
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