Primes of the form n^2 - 13.

Terms

a(0) =3a(1) =23a(2) =131a(3) =311a(4) =563a(5) =887a(6) =1283a(7) =2903a(8) =5171a(9) =7043a(10) =8087a(11) =9203a(12) =10391a(13) =12983a(14) =14387a(15) =19031a(16) =28211a(17) =34583a(18) =39191a(19) =41603a(20) =44087a(21) =46643a(22) =51971a(23) =57587a(24) =76163a(25) =86423a(26) =101111a(27) =108887a(28) =125303a(29) =129587