(s(n)+2)/10, where s(n)=n-th base 10 palindrome that starts with 8.

Terms

a(0) =1a(1) =9a(2) =81a(3) =82a(4) =83a(5) =84a(6) =85a(7) =86a(8) =87a(9) =88a(10) =89a(11) =90a(12) =801a(13) =812a(14) =823a(15) =834a(16) =845a(17) =856a(18) =867a(19) =878a(20) =889a(21) =900a(22) =8001a(23) =8011a(24) =8021a(25) =8031a(26) =8041a(27) =8051a(28) =8061a(29) =8071