Palindromic primes in base 7 (written in base 7).

Terms

a(0) =2a(1) =3a(2) =5a(3) =131a(4) =212a(5) =313a(6) =515a(7) =535a(8) =616a(9) =10301a(10) =10501a(11) =11111a(12) =12521a(13) =13531a(14) =14141a(15) =15151a(16) =15551a(17) =16361a(18) =20302a(19) =21512a(20) =22322a(21) =22522a(22) =23132a(23) =24542a(24) =25352