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 A145734 #7 Jun 02 2025 00:40:54 %S A145734 1,2,4,5,7,10,23,32 %N A145734 Indices of palindromes in A033648. %C A145734 The next term (if it exists) is greater than 10000. %C A145734 These are actually indices into A033648 right-shifted; A033648 has offset 0, but this sequence treats it as having offset 1. %Y A145734 A033648 %K A145734 nonn,base %O A145734 1,2 %A A145734 _Dmitry Kamenetsky_, Oct 17 2008