Numbers k such that (17*10^k - 377)/9 is prime.

Terms

a(0) =3a(1) =19a(2) =27a(3) =145a(4) =166a(5) =196a(6) =247a(7) =345a(8) =370a(9) =799a(10) =1093a(11) =2877a(12) =5223a(13) =9157a(14) =22927a(15) =24600a(16) =25546a(17) =29424a(18) =82540a(19) =95451a(20) =159438