Palindromic in base 5.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =6a(6) =12a(7) =18a(8) =24a(9) =26a(10) =31a(11) =36a(12) =41a(13) =46a(14) =52a(15) =57a(16) =62a(17) =67a(18) =72a(19) =78a(20) =83a(21) =88a(22) =93a(23) =98a(24) =104a(25) =109a(26) =114a(27) =119a(28) =124a(29) =126