Least area/6 of primitive Pythagorean triangles with even leg 4n.

Terms

a(0) =1a(1) =10a(2) =5a(3) =84a(4) =35a(5) =14a(6) =105a(7) =680a(8) =231a(9) =30a(10) =429a(11) =220a(12) =715a(13) =154a(14) =55a(15) =5456a(16) =1615a(17) =390a(18) =2261a(19) =260a(20) =91a(21) =770a(22) =4025a(23) =1976a(24) =5175a(25) =1326a(26) =6525a(27) =140a(28) =8091a(29) =1190