Primes in A002049.

Terms

a(0) =3a(1) =7a(2) =59a(3) =197a(4) =373a(5) =701a(6) =1009a(7) =1571a(8) =2749a(9) =3581a(10) =5701a(11) =5881a(12) =6247a(13) =8269a(14) =9397a(15) =14369a(16) =15881a(17) =31019a(18) =32707a(19) =41801a(20) =47269a(21) =53633a(22) =70177a(23) =81931a(24) =84701a(25) =93239a(26) =118369a(27) =131213a(28) =133873a(29) =138373