Palindromes whose digit sum is 4.

Terms

a(0) =4a(1) =22a(2) =121a(3) =202a(4) =1111a(5) =2002a(6) =10201a(7) =11011a(8) =20002a(9) =101101a(10) =110011a(11) =200002a(12) =1002001a(13) =1010101a(14) =1100011a(15) =2000002a(16) =10011001a(17) =10100101a(18) =11000011a(19) =20000002a(20) =100020001a(21) =100101001a(22) =101000101a(23) =110000011a(24) =200000002a(25) =1000110001a(26) =1001001001