Primes of the form 3*m^2 - 1.

Terms

a(0) =2a(1) =11a(2) =47a(3) =107a(4) =191a(5) =431a(6) =587a(7) =971a(8) =1451a(9) =2027a(10) =2351a(11) =2699a(12) =3467a(13) =4799a(14) =5807a(15) =6911a(16) =7499a(17) =8111a(18) =8747a(19) =10091a(20) =10799a(21) =14699a(22) =15551a(23) =16427a(24) =17327a(25) =18251a(26) =25391a(27) =27647a(28) =36299a(29) =41771