Palindromic in base 10 and 18.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =5a(6) =6a(7) =7a(8) =8a(9) =9a(10) =11a(11) =171a(12) =323a(13) =343a(14) =505a(15) =595a(16) =686a(17) =848a(18) =1661a(19) =2112a(20) =3773a(21) =23332a(22) =46664a(23) =69996a(24) =262262a(25) =583385a(26) =782287a(27) =859958a(28) =981189a(29) =1254521