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 A136825 #10 Apr 12 2024 09:51:26
%S A136825 0,1,5,10,11,15,50,100,101,105,110,150,151,285,500,501,505,1000,1001,
%T A136825 1005,1010,1011,1050,1100,1101,1105,1500,1510,1585,2255,2285,2850,
%U A136825 2851,2855,5000,5001,5005,5010,5011,5015,5050,10000,10001,10005,10010,10011,10050,10100,10105,10110,10500,11000,11001,11005,11010,11050,11205,12255,15000,15005
%N A136825 Numbers k such that k and k^2 use only the digits 0, 1, 2, 5 and 8.
%C A136825 Generated with DrScheme.
%H A136825 Jonathan Wellons, <a href="/A136825/b136825.txt">Table of n, a(n) for n = 1..1064</a>
%H A136825 J. Wellons, <a href="https://web.archive.org/web/20090206165028/http://jonathanwellons.com/shared-digits/">Tables of Shared Digits</a> [archived]
%e A136825 508018515^2 = 258082811582805225.
%t A136825 With[{c={0,1,2,5,8}},Select[FromDigits/@Tuples[c,5],SubsetQ[ c,IntegerDigits[ #^2]]&]] (* _Harvey P. Dale_, Oct 02 2021 *)
%K A136825 base,nonn
%O A136825 1,3
%A A136825 Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008