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A097265 Primitive Pythagorean Quadruples a^2+b^2+c^2=d^2, 0<a<=b<=c<=d, gcd(a,b,c,d)=1, sorted by d, then c, then b; sequence gives long even leg values. 1
2, 6, 4, 8, 6, 6, 12, 10, 14, 12, 12, 10, 6, 18, 16, 16, 8, 20, 18, 18, 22, 16, 20, 22, 10, 14, 10, 26, 16, 24, 24, 18, 22, 14, 30, 20, 20, 28, 28, 8, 32, 32, 26, 30, 30, 10, 24, 28, 28, 36, 26, 22, 26, 34, 34, 14, 24, 24, 32, 24, 12, 30, 30, 38, 18, 42, 42, 28, 28, 20, 40, 40 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

One of a,b,c is odd, other two are even for primitive Pythagorean quadruples.

LINKS

Eric Weisstein's World of Mathematics, Pythagorean Quadruple.

CROSSREFS

Cf. A096907, A096908, A096909.

Sequence in context: A202347 A088438 A204906 * A201895 A192408 A074208

Adjacent sequences:  A097262 A097263 A097264 * A097266 A097267 A097268

KEYWORD

nonn

AUTHOR

Ray Chandler (rayjchandler(AT)sbcglobal.net), Aug 15 2004

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Last modified February 15 16:28 EST 2012. Contains 205823 sequences.