Palindromes with even number of digits.

Terms

a(0) =11a(1) =22a(2) =33a(3) =44a(4) =55a(5) =66a(6) =77a(7) =88a(8) =99a(9) =1001a(10) =1111a(11) =1221a(12) =1331a(13) =1441a(14) =1551a(15) =1661a(16) =1771a(17) =1881a(18) =1991a(19) =2002a(20) =2112a(21) =2222a(22) =2332a(23) =2442a(24) =2552a(25) =2662a(26) =2772a(27) =2882a(28) =2992a(29) =3003