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 A136812 #13 Apr 12 2024 09:51:26 %S A136812 0,1,6,10,11,60,100,101,106,110,111,361,600,601,1000,1001,1006,1010, %T A136812 1011,1060,1100,1101,1106,1110,1631,3606,3610,6000,6001,6010,6011, %U A136812 10000,10001,10006,10010,10011,10060,10100,10101,10106,10110,10111,10301,10306,10600,11000,11001,11006,11010,11060,11100,11101,16310,32111,36060,36100,36361 %N A136812 Numbers k such that k and k^2 use only the digits 0, 1, 2, 3 and 6. %C A136812 Generated with DrScheme. %H A136812 Jonathan Wellons, <a href="/A136812/b136812.txt">Table of n, a(n) for n = 1..1315</a> %H A136812 J. Wellons, <a href="https://web.archive.org/web/20090206165028/http://jonathanwellons.com/shared-digits/">Tables of Shared Digits</a> [archived] %H A136812 <a href="/index/Sq#squares">Index entries for sequences related to squares</a>. %e A136812 1031316261^2 = 1063613230203020121. %Y A136812 Cf. A136808, ..., A137147. %Y A136812 Cf. A006716 = A027675^2, A030174 = A030175^2, A030176 = A030177^2, A058411^2 = A058412, ..., A058473^2 = A058474. %K A136812 base,nonn %O A136812 1,3 %A A136812 Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008