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A140392 Triples of height (a prime p), base length x and side length y=z of isosceles triangles. 0
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; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

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).

LINKS

Table of n, a(n) for n=1..57.

EXAMPLE

Contains (p,x,y) = (3,8,5), (5,24,13), (7,48,25), (11,120,61), ...

CROSSREFS

Sequence in context: A113813 A110944 A166494 * A140385 A078361 A193014

Adjacent sequences:  A140389 A140390 A140391 * A140393 A140394 A140395

KEYWORD

nonn,less

AUTHOR

Juri-Stepan Gerasimov, Jun 13 2008

EXTENSIONS

Edited and extended by R. J. Mathar, Jun 17 2008

STATUS

approved

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Last modified September 15 02:19 EDT 2019. Contains 327062 sequences. (Running on oeis4.)