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 A043028 #9 Aug 22 2021 14:54:58 %S A043028 1,10,82,91,100,109,118,127,136,145,154,730,820,910,1000,1090,1180, %T A043028 1270,1360,1450,6562,6643,6724,6805,6886,6967,7048,7129,7210,7300, %U A043028 7381,7462,7543,7624,7705,7786,7867,7948,8038,8119 %N A043028 Base-9 palindromes that start with 1. %Y A043028 Cf. A007095. %K A043028 nonn,base %O A043028 1,2 %A A043028 _Clark Kimberling_