k-digit primes with the same even digit repeated k-1 times and a single odd digit.

Terms

a(0) =3a(1) =5a(2) =7a(3) =23a(4) =29a(5) =41a(6) =43a(7) =47a(8) =61a(9) =67a(10) =83a(11) =89a(12) =223a(13) =227a(14) =229a(15) =443a(16) =449a(17) =661a(18) =881a(19) =883a(20) =887a(21) =2221a(22) =4441a(23) =4447a(24) =6661a(25) =8887a(26) =22229a(27) =44449a(28) =88883a(29) =444443