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A093536 Least area common to n distinct primitive Pythagorean triangles. 1

%I

%S 6,210,13123110

%N Least area common to n distinct primitive Pythagorean triangles.

%C No a(4) < 10^17.

%e a(2) = 210 is the smallest area common to 2 primitive Pythagorean triangles (viz. triples {20, 21, 29}, {12, 35, 37}); followed by 2730 (triples {60, 91, 109}, {28, 195, 197}); 7980 (triples {95, 168, 193}, {40, 399, 401}); 71610 (triples {341, 420, 541}, {132, 1085, 1093}); ...

%Y Cf. A024407, A055193.

%K hard,more,nonn,bref

%O 1,1

%A _Lekraj Beedassy_, May 14 2004

%E Corrected by _Ray Chandler_, Jul 02 2004

%E Removed a(0) and updated a(4) lower limit, _Peter T. C. Radden_, Dec 30 2012

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Last modified April 8 02:27 EDT 2020. Contains 333312 sequences. (Running on oeis4.)