Consider all primes of form p = (x^2 + 11y^2 )/4; sequence gives values of x.

Terms

a(0) =1a(1) =3a(2) =0a(3) =9a(4) =5a(5) =7a(6) =12a(7) =6a(8) =15a(9) =13a(10) =3a(11) =9a(12) =17a(13) =4a(14) =21a(15) =3a(16) =23a(17) =16a(18) =21a(19) =25a(20) =15a(21) =20a(22) =1a(23) =5a(24) =27a(25) =18a(26) =30a(27) =12a(28) =19a(29) =27