Ordered set of c + a - b as (a,b,c) runs through all primitive Pythagorean triples with a<b<c.

Terms

a(0) =4a(1) =6a(2) =8a(3) =10a(4) =10a(5) =12a(6) =14a(7) =14a(8) =16a(9) =18a(10) =18a(11) =20a(12) =22a(13) =22a(14) =24a(15) =26a(16) =26a(17) =28a(18) =28a(19) =30a(20) =30a(21) =32a(22) =34a(23) =34a(24) =36a(25) =36a(26) =38a(27) =38a(28) =40a(29) =42