Numbers which are the area of exactly three Pythagorean triangles.

Terms

a(0) =840a(1) =3360a(2) =7560a(3) =10920a(4) =13440a(5) =21000a(6) =30240a(7) =31920a(8) =41160a(9) =43680a(10) =53760a(11) =68040a(12) =84000a(13) =98280a(14) =101640a(15) =120960a(16) =127680a(17) =141960a(18) =164640a(19) =166320a(20) =174720a(21) =189000a(22) =215040a(23) =242760a(24) =272160a(25) =273000a(26) =286440a(27) =287280a(28) =303240a(29) =336000