Colombian palindromes.

Terms

a(0) =1a(1) =3a(2) =5a(3) =7a(4) =9a(5) =121a(6) =222a(7) =323a(8) =424a(9) =525a(10) =626a(11) =727a(12) =828a(13) =929a(14) =1111a(15) =2112a(16) =3113a(17) =4114a(18) =5115a(19) =6116a(20) =7117a(21) =8118a(22) =9119a(23) =10401a(24) =11211a(25) =12921a(26) =13731a(27) =14541a(28) =15351a(29) =16161