Numbers k such that (62*10^k - 611)/9 is prime.

Terms

a(0) =4a(1) =7a(2) =9a(3) =10a(4) =12a(5) =13a(6) =19a(7) =40a(8) =76a(9) =87a(10) =172a(11) =175a(12) =1005a(13) =1330a(14) =1582a(15) =1849a(16) =2134a(17) =2350a(18) =2652a(19) =5680a(20) =13504a(21) =41416a(22) =95251a(23) =109233