Numbers k such that (44*10^k - 503)/9 is prime.

Terms

a(0) =2a(1) =5a(2) =8a(3) =10a(4) =11a(5) =35a(6) =74a(7) =107a(8) =170a(9) =196a(10) =281a(11) =748a(12) =1124a(13) =2597a(14) =5189a(15) =5650a(16) =8453a(17) =10822a(18) =24554a(19) =54596a(20) =85370a(21) =140410a(22) =188999