Numbers k such that (68*10^(k-1) + 13)/9 is a depression prime.

Terms

a(0) =3a(1) =5a(2) =11a(3) =21a(4) =23a(5) =59a(6) =75a(7) =83a(8) =209a(9) =351a(10) =423a(11) =3813a(12) =3983a(13) =20925a(14) =23787a(15) =38853a(16) =56043a(17) =68505a(18) =74435a(19) =205511