Bases of right triangles that are solutions to Leech's problem A117319.

Terms

a(0) =12a(1) =24a(2) =21a(3) =45a(4) =15a(5) =528a(6) =1155a(7) =40a(8) =468a(9) =60a(10) =455a(11) =165a(12) =275a(13) =1288a(14) =37961a(15) =6160a(16) =399a(17) =420a(18) =17480a(19) =52080a(20) =84a(21) =46123872a(22) =140a(23) =35a(24) =2275a(25) =68207909a(27) =92008a(28) =840a(29) =827811a(30) =8040130371