Numbers k such that 10^k + 123456789 is prime.

Terms

a(0) =4a(1) =11a(2) =17a(3) =23a(4) =26a(5) =79a(6) =82a(7) =221a(8) =526a(9) =821a(10) =1204a(11) =5392a(12) =13139a(13) =35879a(14) =60991a(15) =77669