Numbers k such that k and k+6 are both balanced primes.

Terms

a(0) =257a(1) =1747a(2) =3307a(3) =5107a(4) =5387a(5) =6317a(6) =6367a(7) =12647a(8) =13457a(9) =14747a(10) =15797a(11) =15907a(12) =17477a(13) =18217a(14) =19477a(15) =23327a(16) =26177a(17) =30097a(18) =30637a(19) =53617a(20) =56087a(21) =62207a(22) =63697a(23) =71347a(24) =75527a(25) =77557a(26) =78797a(27) =80917a(28) =82787a(29) =83437