Palindromic even lucky numbers.

Terms

a(0) =2a(1) =4a(2) =6a(3) =22a(4) =44a(5) =212a(6) =262a(7) =282a(8) =434a(9) =474a(10) =646a(11) =666a(12) =818a(13) =838a(14) =868a(15) =2442a(16) =2662a(17) =2772a(18) =4884a(19) =4994a(20) =6666a(21) =6886a(22) =8118a(23) =8338a(24) =20202a(25) =20402a(26) =21012a(27) =21812a(28) =22322a(29) =22422