Palindromic in bases 5 and 10.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =6a(6) =88a(7) =252a(8) =282a(9) =626a(10) =676a(11) =1221a(12) =15751a(13) =18881a(14) =10088001a(15) =10400401a(16) =27711772a(17) =30322303a(18) =47633674a(19) =65977956a(20) =808656808a(21) =831333138a(22) =831868138a(23) =836131638a(24) =836181638a(25) =2512882152a(26) =2596886952a(27) =2893553982a(28) =6761551676