Numbers n such that there exist exactly four distinct Pythagorean triangles, at least one of them primitive, with area n.
A291420
Numbers n such that there exist exactly four distinct Pythagorean triangles, at least one of them primitive, with area n.
Terms
- a(0) =341880a(1) =8168160a(2) =14636160a(3) =17957940a(4) =52492440a(5) =116396280a(6) =1071572040a(7) =1187525640a(8) =1728483120a(9) =5988702720a(10) =6609482880a(11) =22539095040a(12) =29239970760a(13) =136496680320a(14) =258670630680a(15) =398648544840a(16) =494892478080a(17) =592003418160
External references
- oeis: A291420