Primes of the form 7n^2 + 3.

Terms

a(0) =3a(1) =31a(2) =2803a(3) =3391a(4) =10111a(5) =32371a(6) =34303a(7) =67231a(8) =70003a(9) =87811a(10) =114691a(11) =161731a(12) =179203a(13) =231871a(14) =285631a(15) =302851a(16) =338803a(17) =409951a(18) =473203a(19) =502771a(20) =588703a(21) =596851a(22) =621631a(23) =638431a(24) =672703a(25) =753091a(26) =809203a(27) =1075651a(28) =1246591a(29) =1294303