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Search: id:A140392
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| A140392 |
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Triples of height (a prime p), base length x and side length y=z of isosceles triangles. |
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+0
1
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| 3, 8, 5, 5, 24, 13, 7, 48, 25, 11, 120, 61, 13, 168, 85, 17, 288, 145, 19, 360, 181, 23, 528, 265, 29, 840, 421, 31, 960, 481, 37, 1368, 685, 41, 1680, 841, 43, 1848, 925, 47, 2208, 1105, 53, 2808, 1405, 59, 3480, 1741, 61, 3720, 1861, 67, 4488, 2245, 71, 5040, 2521
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Or: consecutive triples of p=A000040(j), x=2*A084920(j), y=z= A066885(j), j>=2.
The area of the triangles is half the product of height and base length, p*x/2=A127918(j).
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EXAMPLE
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Contains (p,x,y) = (3,8,5), (5,24,13), (7,48,25), (11,120,61), ...
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CROSSREFS
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Sequence in context: A113813 A110944 A166494 this_sequence A140385 A078361 A155676
Adjacent sequences: A140389 A140390 A140391 this_sequence A140393 A140394 A140395
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KEYWORD
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nonn,less
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AUTHOR
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Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Jun 13 2008
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EXTENSIONS
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Edited and extended by R. J. Mathar, Jun 17 2008
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