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 A109872 #15 Oct 08 2024 07:28:22 %S A109872 1,2,3,4,5,6,7,8,9,11,22,33,44,55,66,77,88,99,101,202,303,404,505,606, %T A109872 707,808,909,1111,2112,3113,4114,5115,6116,7117,8118,9119 %N A109872 Palindromes such that successive difference of terms is also a palindrome. %C A109872 The final term is a(36) = 9119 - see A073880. - _Scott R. Shannon_, Oct 07 2024 %e A109872 1111 follows 909 as 1111-909 = 202. %Y A109872 Cf. A073880. %K A109872 base,nonn,fini,full %O A109872 1,2 %A A109872 _Amarnath Murthy_, Jul 09 2005 %E A109872 a(29) onwards corrected by _Scott R. Shannon_, Oct 07 2024