Numbers k such that (7*10^k + 107)/3 is prime.

Terms

a(0) =1a(1) =2a(2) =4a(3) =8a(4) =12a(5) =15a(6) =21a(7) =31a(8) =48a(9) =151a(10) =723a(11) =879a(12) =1811a(13) =3444a(14) =5104a(15) =5512a(16) =5695a(17) =6723a(18) =9082a(19) =14944a(20) =15184a(21) =18512a(22) =35141a(23) =81985a(24) =123563a(25) =155203a(26) =165134a(27) =165239