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A024407 Areas of more than one primitive Pythagorean triangle. 7
210, 2730, 7980, 71610, 85470, 106260, 114114, 234780, 341880, 420420, 499590, 1563660, 1647030, 1857240, 2042040, 3423420, 3666390, 6587490, 7393470, 8514660, 9279270, 12766110, 13123110, 17957940, 18820830, 23393370, 23573550, 29099070, 29274630, 29609580 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Among a(1) to a(30), only a(23) = 13123110 has multiplicity 3, the others have multiplicity 2. The three primitive Pythagorean triangles corresponding to a(23) are [4485, 5852, 7373], [3059, 8580, 9109] and [19019, 1380, 19069]. Leg exchange is not taken into account. - Wolfdieter Lang, Jun 15 2015

LINKS

Giovanni Resta, Table of n, a(n) for n = 1..200

Ron Knott, Pythagorean Triples and Online Calculators

CROSSREFS

Cf. A024365, A024406.

Sequence in context: A187663 A064260 A027806 * A027822 A024449 A235240

Adjacent sequences:  A024404 A024405 A024406 * A024408 A024409 A024410

KEYWORD

nonn

AUTHOR

David W. Wilson

EXTENSIONS

a(29) and a(30) added by Wolfdieter Lang, Jun 14 2015

STATUS

approved

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Last modified September 26 01:25 EDT 2017. Contains 292500 sequences.