Primes of the form (2k)^2 + 3(2k + 1)^2.

Terms

a(0) =31a(1) =307a(2) =463a(3) =1123a(4) =1723a(5) =3307a(6) =4831a(7) =6007a(8) =8011a(9) =10303a(10) =11131a(11) =13807a(12) =20023a(13) =23563a(14) =26083a(15) =30103a(16) =35911a(17) =43891a(18) =60271a(19) =86143a(20) =95791a(21) =108571a(22) =127807a(23) =136531a(24) =145543a(25) =164431a(26) =205663a(27) =239611a(28) =276151a(29) =284623