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A099830 Smallest perimeter S such that exactly n distinct Pythagorean triangles with this perimeter can be constructed. 2
12, 60, 120, 240, 420, 720, 1320, 840, 2640, 1680, 3360, 2520, 4620, 7920, 7560, 5040, 10080, 17160, 10920, 9240, 40320, 25200, 28560, 21840, 18480, 60480, 41580, 46200, 36960, 32760, 27720, 78540, 60060, 129360, 134640, 115920, 85680, 65520, 83160 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Least perimeter common to exactly n distinct Pythagorean triangles. - Lekraj Beedassy, Jun 07 2006

LINKS

Table of n, a(n) for n=1..39.

Ron Knott, Pythagorean Triples and Online Calculators

Eric Weisstein's World of Mathematics, Pythagorean Triple.

Index entries related to Pythagorean Triples.

EXAMPLE

a(7)=1320 because 1320 is the smallest possible perimeter for which exactly 7 different Pythgorean triangles exist: 1320 = 110+600+610 = 120+594+606 = 220+528+572 = 231+520+569 = 264+495+561 = 330+440+550 = 352+420+548.

CROSSREFS

Cf. A099829 first perimeter producing at least n Pythagorean triangles, A009096 ordered perimeters of Pythagorean triangles, A001399, A069905 partitions into 3 parts.

Sequence in context: A094807 A120644 A099829 * A158443 A153792 A229616

Adjacent sequences:  A099827 A099828 A099829 * A099831 A099832 A099833

KEYWORD

nonn

AUTHOR

Hugo Pfoertner, Oct 27 2004

EXTENSIONS

More terms from Ray Chandler, Oct 29 2004

STATUS

approved

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