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 A029963 #19 Aug 11 2024 14:41:30
%S A029963 0,1,2,3,4,5,7,55,111,141,191,343,434,777,868,1441,7667,7777,22022,
%T A029963 39893,74647,168861,808808,909909,1867681,3097903,4232324,4265624,
%U A029963 4298924,4516154,4565654,4598954,4849484,5100015,5182815,5400045
%N A029963 Palindromic in bases 6 and 10.
%H A029963 Robert G. Wilson v, <a href="/A029963/b029963.txt">Table of n, a(n) for n = 1..102</a>
%H A029963 P. De Geest, <a href="https://www.worldofnumbers.com/nobase10.htm">Palindromic numbers beyond base 10</a>
%t A029963 palQ[n_Integer, base_Integer] := Block[{idn = IntegerDigits[n, base]}, idn == Reverse[idn]]; Select[ Range[10^7], palQ[ #, 6] && palQ[ #, 10] &] (* _Robert G. Wilson v_ Sep 30 2004 *)
%t A029963 Select[Range[0, 10^5],
%t A029963 PalindromeQ[#] && # == IntegerReverse[#, 6] &] (* _Robert Price_, Nov 09 2019 *)
%Y A029963 Cf. A007632, A007633, A029804, A029961, A029962, A029964, A029965, A029966, A029967, A029968, A029969, A029970.
%K A029963 nonn,base
%O A029963 1,3
%A A029963 _Patrick De Geest_