Primes with digit sum = 67.

Terms

a(0) =59899999a(1) =69899899a(2) =69899989a(3) =69979999a(4) =69997999a(5) =69999799a(6) =77899999a(7) =78997999a(8) =78998989a(9) =78999889a(10) =78999979a(11) =79699999a(12) =79879999a(13) =79889899a(14) =79979899a(15) =79979989a(16) =79988899a(17) =79989979a(18) =79996999a(19) =79997899a(20) =79997989