Palindromic in bases 6 and 10.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =5a(6) =7a(7) =55a(8) =111a(9) =141a(10) =191a(11) =343a(12) =434a(13) =777a(14) =868a(15) =1441a(16) =7667a(17) =7777a(18) =22022a(19) =39893a(20) =74647a(21) =168861a(22) =808808a(23) =909909a(24) =1867681a(25) =3097903a(26) =4232324a(27) =4265624a(28) =4298924a(29) =4516154