Primes of the form x^2 + (x+3)^2.

Terms

a(0) =17a(1) =29a(2) =89a(3) =149a(4) =269a(5) =317a(6) =617a(7) =929a(8) =1109a(9) =1409a(10) =2969a(11) =3449a(12) =3617a(13) =4517a(14) =5309a(15) =6389a(16) =7817a(17) =8069a(18) =8849a(19) =12329a(20) =14969a(21) =17117a(22) =17489a(23) =21017a(24) =23117a(25) =23549a(26) =27617a(27) =30509a(28) =32009a(29) =33029