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 A029998 #18 Feb 10 2025 20:03:05 %S A029998 0,1,2,3,14,28,170,183,196,209,308,340,353,366,2198,2380,2562,2898, %T A029998 4026,4242,4396,4578,7078,7662,28562,28731,28900,29069,30772,30941, %U A029998 31110,32813,32982,33151,37374,51510,52360,54942,55449,57124,57293 %N A029998 Numbers k such that k^2 is palindromic in base 13. %H A029998 Seiichi Manyama, <a href="/A029998/b029998.txt">Table of n, a(n) for n = 1..100</a> %H A029998 Patrick De Geest, <a href="https://www.worldofnumbers.com/nobase10pg2.htm">Palindromic Squares in bases 2 to 17</a> %Y A029998 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), A029737 (b=12), this sequence (b=13), A030072 (b=14), A030073 (b=15), A029733 (b=16), A118651 (b=17). %K A029998 nonn,base %O A029998 1,3 %A A029998 _Patrick De Geest_