Primes of the form identical digits followed by a 3.

Terms

a(0) =3a(1) =13a(2) =23a(3) =43a(4) =53a(5) =73a(6) =83a(7) =113a(8) =223a(9) =443a(10) =773a(11) =883a(12) =11113a(13) =77773a(14) =88883a(15) =444443a(16) =22222223a(17) =55555553a(18) =88888883a(19) =111111113a(20) =444444443a(21) =777777773a(22) =888888883a(23) =11111111113a(24) =22222222223a(25) =444444444443a(26) =777777777773