Palindromes (A002113) in A157037.

Terms

a(0) =6a(1) =22a(2) =66a(3) =202a(4) =222a(5) =282a(6) =434a(7) =454a(8) =474a(9) =494a(10) =555a(11) =595a(12) =838a(13) =858a(14) =969a(15) =1001a(16) =1551a(17) =1771a(18) =3333a(19) =3553a(20) =5335a(21) =6006a(22) =6226a(23) =6886a(24) =8778a(25) =9889a(26) =12921a(27) =14541a(28) =15051a(29) =16261