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 A053780 #16 Aug 11 2024 14:41:32 %S A053780 4,434,505,18781,27072,33633,1254521,3360633,5989895,9145419,10411401, %T A053780 161101161,390949093,795303597,935424539,25127372152,77753535777, %U A053780 1997671767991,2300809080032,3754911194573,6476856586746,9825337335289 %N A053780 Palindromes arising in A053779. %C A053780 a(8)=3360633 coincides with A171706(3) and A171741(6) (and see a(6)=33633 here). %C A053780 Also, note that A029965 ran just short of the OEIS space limitation, possibly affecting discovery. %H A053780 P. De Geest, <a href="https://www.worldofnumbers.com/firstpal.htm#sfn3">Palindromic Sums</a> %H A053780 C. Rivera, <a href="http://www.primepuzzles.net/puzzles/puzz_089.htm">PrimePuzzle 89</a> %Y A053780 Cf. A002808, A002113, A053779, A171706, A171741, A029965, A029966. %K A053780 base,nonn %O A053780 1,1 %A A053780 _G. L. Honaker, Jr._, Mar 29 2000 %E A053780 More terms from _Patrick De Geest_, Nov 15 2000