Palindromes in base 3 (written in base 10).

Terms

a(0) =0a(1) =1a(2) =2a(3) =4a(4) =8a(5) =10a(6) =13a(7) =16a(8) =20a(9) =23a(10) =26a(11) =28a(12) =40a(13) =52a(14) =56a(15) =68a(16) =80a(17) =82a(18) =91a(19) =100a(20) =112a(21) =121a(22) =130a(23) =142a(24) =151a(25) =160a(26) =164a(27) =173a(28) =182a(29) =194