Primes of the form k*(k+2)/3 - 2, k > 0.

Terms

a(0) =3a(1) =19a(2) =31a(3) =83a(4) =131a(5) =223a(6) =383a(7) =479a(8) =643a(9) =1279a(10) =1823a(11) =2131a(12) =2239a(13) =2579a(14) =2819a(15) =3331a(16) =4483a(17) =4639a(18) =6163a(19) =6719a(20) =7103a(21) =7699a(22) =8963a(23) =9631a(24) =9859a(25) =10559a(26) =11779a(27) =13331a(28) =14143a(29) =14419