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URL: https://oeis.org/A140384

⇱ A140384 - OEIS

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A140384

Consecutive triples (x=(p^2-1)/2,2*p,y=z=(p^2+1)/2), p prime, representing isosceles triangles with sides (x,y,z).

1

4, 6, 5, 12, 10, 13, 24, 14, 25, 60, 22, 61, 84, 26, 85, 144, 34, 145, 180, 38, 181, 264, 46, 265, 420, 58, 421, 480, 62, 481, 684, 74, 685, 840, 82, 841, 924, 86, 925, 1104, 94, 1105, 1404, 106, 1405, 1740, 118, 1741, 1860, 122, 1861, 2244, 134, 2245, 2520, 142

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OFFSET

1,1

COMMENTS

Or: Triples A084921(i), A100484(i), A066885(i), i=2,3... in compound order.

LINKS

Table of n, a(n) for n=1..56.

CROSSREFS

Sequence in context: A347092 A012891 A013074 * A274929 A301915 A009456

Adjacent sequences: A140381 A140382 A140383 * A140385 A140386 A140387

KEYWORD

nonn,less

AUTHOR

Juri-Stepan Gerasimov, Jun 13 2008

EXTENSIONS

Edited by R. J. Mathar, Jun 16 2008 and Jun 17 2008

STATUS

approved