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%I #7 Apr 12 2024 09:51:26
%S 0,1,5,10,11,15,50,100,101,105,110,150,500,501,505,711,715,755,1000,
%T 1001,1005,1010,1011,1050,1100,1101,1105,1255,1500,5000,5001,5005,
%U 5010,5011,5015,5050,7110,7150,7251,7550,10000,10001,10005,10010,10011,10050,10100,10105,10110,10500,10501,11000,11001,11005,11010,11050,11205,12550,15000,15005
%N Numbers k such that k and k^2 use only the digits 0, 1, 2, 5 and 7.
%C Generated with DrScheme.
%H Jonathan Wellons, <a href="/A136824/b136824.txt">Table of n, a(n) for n = 1..1262</a>
%H J. Wellons, <a href="https://web.archive.org/web/20090206165028/http://jonathanwellons.com/shared-digits/">Tables of Shared Digits</a> [archived]
%e 721257251^2 = 520212022120077001.
%K base,nonn,changed
%O 1,3
%A Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008
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