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%I #9 May 10 2024 09:26:41
%S 1,5,11,15,1515
%N Numbers k such that k and k^2 use only the digits 1, 2, 5 and 9.
%C Generated with DrScheme.
%H Jonathan Wellons, <a href="https://web.archive.org/web/20090206165028/http://jonathanwellons.com/shared-digits/">Tables of Shared Digits</a> [archived]
%e 1515^2 = 2295225.
%K base,nonn,more
%O 1,2
%A Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008