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 A029737 #22 Feb 12 2025 11:21:50
%S A029737 0,1,2,3,13,26,145,157,169,179,181,290,292,302,611,1729,1745,1783,
%T A029737 1885,2041,3458,3614,3796,20737,20881,21025,21169,22477,22621,22765,
%U A029737 24073,24217,24361,24599,25523,25579,28613,41474,41618,41908,43214
%N A029737 Numbers whose square is palindromic in base 12.
%H A029737 Seiichi Manyama, <a href="/A029737/b029737.txt">Table of n, a(n) for n = 1..100</a>
%H A029737 Patrick De Geest, <a href="https://www.worldofnumbers.com/nobase10pg2.htm">Palindromic Squares in bases 2 to 17</a>
%t A029737 pal12Q[n_]:=Module[{idn12=IntegerDigits[n^2,12]},idn12==Reverse[idn12]]
%t A029737 Select[Range[0,50000],pal12Q] (* _Harvey P. Dale_, Feb 06 2011 *)
%Y A029737 Numbers k such that k^2 is palindromic in base b: A003166 (b=2), A029984 (b=3), A029986 (b=4), A029988 (b=5), A029990 (b=6), A029992 (b=7), A029805 (b=8), A029994 (b=9), A002778 (b=10), A029996 (b=11), this sequence (b=12), A029998 (b=13), A030072 (b=14), A030073 (b=15), A029733 (b=16), A118651 (b=17).
%K A029737 base,nonn
%O A029737 1,3
%A A029737 _Patrick De Geest_