Triangular numbers that are hypotenuse and a leg of a Pythagorean triple.

Terms

a(0) =10a(1) =45a(2) =136a(3) =325a(4) =435a(5) =595a(6) =630a(7) =666a(8) =780a(9) =1225a(10) =2080a(11) =2145a(12) =3321a(13) =5050a(14) =5565a(15) =5886a(16) =6216a(17) =7381a(18) =7503a(19) =9316a(20) =10440a(21) =11026a(22) =11175a(23) =12246a(24) =13530a(25) =14196a(26) =14365a(27) =14535a(28) =15753a(29) =16653