Palindromic numbers with even digits.

Terms

a(0) =0a(1) =2a(2) =4a(3) =6a(4) =8a(5) =22a(6) =44a(7) =66a(8) =88a(9) =202a(10) =222a(11) =242a(12) =262a(13) =282a(14) =404a(15) =424a(16) =444a(17) =464a(18) =484a(19) =606a(20) =626a(21) =646a(22) =666a(23) =686a(24) =808a(25) =828a(26) =848a(27) =868a(28) =888a(29) =2002