a(n) = prime(1)^2 + prime(n)^2.

Terms

a(0) =8a(1) =13a(2) =29a(3) =53a(4) =125a(5) =173a(6) =293a(7) =365a(8) =533a(9) =845a(10) =965a(11) =1373a(12) =1685a(13) =1853a(14) =2213a(15) =2813a(16) =3485a(17) =3725a(18) =4493a(19) =5045a(20) =5333a(21) =6245a(22) =6893a(23) =7925a(24) =9413a(25) =10205a(26) =10613a(27) =11453a(28) =11885a(29) =12773