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Search: id:A162345
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| A162345 |
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Length of n-th edge in the graph of the zig-zag function for prime numbers. |
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+0
6
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| 2, 2, 2, 3, 3, 3, 3, 3, 5, 4, 4, 5, 3, 3, 5, 6, 4, 4, 5, 3, 4, 5, 5, 7, 6, 3, 3, 3, 3, 9, 9, 5, 4, 6, 6, 4, 6, 5, 5, 6, 4, 6, 6, 3, 3, 7, 12, 8, 3, 3, 5, 4, 6, 8, 6, 6, 4, 4, 5, 3, 6, 12, 9, 3, 3, 9, 10, 8, 6, 3, 5, 7, 7, 6, 5, 5, 7
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Also, first differences of A162800.
Also {2, 2, } together with the numbers A052288.
Note that the graph of the zig-zag function for prime numbers is similiar to the graph of the mountain path function for prime numbers but with exactly a vertex between consecutive odd noncomposite numbers (A006005).
Is this the same as A115061 if n>1? [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 05 2009]
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LINKS
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O. E. Pol, Graph of the mountain path function for prime numbers
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EXAMPLE
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Array begins:
=====
x, y
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2, 2;
2, 3;
3, 3;
3, 3;
5, 4;
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CROSSREFS
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Cf. A000040, A006005, A008578, A024675, A052288, A162203, A162800, A162801, A162802.
Sequence in context: A063272 A127240 A097561 this_sequence A048689 A069923 A095840
Adjacent sequences: A162342 A162343 A162344 this_sequence A162346 A162347 A162348
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KEYWORD
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easy,nonn
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AUTHOR
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Omar E. Pol (info(AT)polprimes.com), Jul 04 2009
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EXTENSIONS
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Edited by Omar E. Pol (info(AT)polprimos.com), Jul 16 2009
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