Numbers k such that (76*10^k - 211)/9 is prime.

Terms

a(0) =1a(1) =2a(2) =4a(3) =5a(4) =8a(5) =13a(6) =41a(7) =55a(8) =82a(9) =188a(10) =296a(11) =320a(12) =464a(13) =509a(14) =1036a(15) =1169a(16) =1808a(17) =2141a(18) =3842a(19) =12274a(20) =23141a(21) =76547a(22) =83816a(23) =85847a(24) =154013