Prime powers of the form 12*c^2 + 4*c + 3, where c is an arbitrary integer.

Terms

a(0) =3a(1) =11a(2) =19a(3) =43a(4) =59a(5) =179a(6) =211a(7) =283a(8) =563a(9) =619a(10) =739a(11) =1163a(12) =1499a(13) =1979a(14) =2083a(15) =2411a(16) =3011a(17) =3539a(18) =4259a(19) =4723a(20) =7603a(21) =8011a(22) =8219a(23) =10211a(24) =11411a(25) =12163a(26) =14011a(27) =14563a(28) =14843a(29) =17483