Numbers k such that (11*10^k + 49)/3 is prime.

Terms

a(0) =1a(1) =2a(2) =4a(3) =5a(4) =7a(5) =10a(6) =11a(7) =16a(8) =18a(9) =21a(10) =22a(11) =30a(12) =41a(13) =69a(14) =83a(15) =128a(16) =166a(17) =190a(18) =262a(19) =263a(20) =353a(21) =496a(22) =1398a(23) =1793a(24) =2806a(25) =9722a(26) =15733a(27) =32420a(28) =61095a(29) =77909