Smallest a(n) > a(n-1) such that a(n)^2+a(n-1)^2 is a perfect square, with a(1)=5.

Terms

a(0) =5a(1) =12a(2) =16a(3) =30a(4) =40a(5) =42a(6) =56a(7) =90a(8) =120a(9) =126a(10) =168a(11) =224a(12) =360a(13) =378a(14) =504a(15) =550a(16) =1320a(17) =1386a(18) =1848a(19) =1989a(20) =2652a(21) =2961a(22) =3948a(23) =5264a(24) =8052a(25) =9711a(26) =12948a(27) =17264a(28) =24852a(29) =31311