Primes written in base 7.

Terms

a(0) =2a(1) =3a(2) =5a(3) =10a(4) =14a(5) =16a(6) =23a(7) =25a(8) =32a(9) =41a(10) =43a(11) =52a(12) =56a(13) =61a(14) =65a(15) =104a(16) =113a(17) =115a(18) =124a(19) =131a(20) =133a(21) =142a(22) =146a(23) =155a(24) =166a(25) =203a(26) =205a(27) =212a(28) =214a(29) =221