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 A058417 #19 Mar 08 2024 09:02:58
%S A058417 1,4,10301,10496,10801,81619,1003001,1008001,100030001,100080001,
%T A058417 326498249,10000300001,10000800001,24698199551,40012700004,
%U A058417 1000003000001,1000008000001,4000127000004,4075127000004,8124407769251,78103531364504,100000030000001,100000080000001
%N A058417 Numbers k such that k^2 contains only digits {0,1,6}, not ending with zero.
%H A058417 Zhao Hui Du, <a href="/A058417/b058417.txt">Table of n, a(n) for n = 1..47</a>
%H A058417 Patrick De Geest, <a href="http://www.worldofnumbers.com/threedigits.htm">Index to related sequences</a>
%H A058417 Hisanori Mishima, <a href="http://www.asahi-net.or.jp/~KC2H-MSM/mathland/math02/math0210.htm#016">Sporadic tridigital solutions</a>
%Y A058417 Cf. A058418.
%K A058417 nonn,base
%O A058417 1,2
%A A058417 _Patrick De Geest_, Nov 15 2000
%E A058417 Terms a(21) and above from _Zhao Hui Du_, Mar 07 2024