This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A043034 #17 Aug 27 2021 02:51:41 %S A043034 7,70,574,583,592,601,610,619,628,637,646,5110,5200,5290,5380,5470, %T A043034 5560,5650,5740,5830,45934,46015,46096,46177,46258,46339,46420,46501, %U A043034 46582,46672,46753,46834,46915,46996,47077,47158 %N A043034 Base-9 palindromes that start with 7. %Y A043034 Cf. A007095, A043078. %Y A043034 Base-9 palindromes: A029955. %Y A043034 Base-9 palindromes that start with d, for d=1..8: A043028..A043035. %Y A043034 Base-b palindromes that start with 7, for b=8..10: A043027, this sequence, A043042. %K A043034 nonn,base %O A043034 1,1 %A A043034 _Clark Kimberling_