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%I #7 Apr 12 2024 09:51:26
%S 0,5,50,500,505,755,5000,5005,5050,7550,50000,50005,50050,50500,50505,
%T 75500,500000,500005,500050,500500,500505,500755,505000,505050,755000,
%U 5000000,5000005,5000050,5000500,5000505,5000755,5005000,5005005,5005050,5007550,5025505,5050000,5050005,5050500,7550000,7550005,50000000,50000005,50000050
%N Numbers k such that k and k^2 use only the digits 0, 2, 5 and 7.
%C Generated with DrScheme.
%H Jonathan Wellons, <a href="/A136915/b136915.txt">Table of n, a(n) for n = 1..1077</a>
%H J. Wellons, <a href="https://web.archive.org/web/20090206165028/http://jonathanwellons.com/shared-digits/">Tables of Shared Digits</a> [archived]
%e 505050250050005^2 = 255075755075572575505000500025.
%K base,nonn,changed
%O 1,2
%A Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008
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