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 A145735 #7 Jun 02 2025 00:41:01 %S A145735 1,3,4,5,6,12,13,19,29,36 %N A145735 Indices of palindromes in A033649. %C A145735 The next term (if it exists) is greater than 10000. %C A145735 These are actually indices into A033649 right-shifted; A033649 has offset 0, but this sequence treats it as having offset 1. %Y A145735 A033649 %K A145735 nonn,base %O A145735 1,2 %A A145735 _Dmitry Kamenetsky_, Oct 17 2008