1,1

No a(4) < 10^17.

Table of n, a(n) for n=1..3.

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}); ...

Cf. A024407, A055193.

Sequence in context: A099788 A126676 A073100 * A002037 A332989 A030265

Adjacent sequences: A093533 A093534 A093535 * A093537 A093538 A093539

hard,more,nonn,bref

Lekraj Beedassy, May 14 2004

Corrected by Ray Chandler, Jul 02 2004

Removed a(0) and updated a(4) lower limit, Peter T. C. Radden, Dec 30 2012

approved