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Numbers k such that k and k^2 use only the digits 0, 3, 5, 6 and 8.
1

%I #7 Apr 12 2024 09:51:26

%S 0,6,60,600,6000,8066,60000,60666,80660,550506,555566,600000,603066,

%T 606660,806600,5505060,5555660,6000000,6030660,6066600,8066000,

%U 55050600,55556600,60000000,60306600,60553006,60666000,80660000,80830306,550506000,553655006,555005006,555566000,600000000,603066000,605530060,606660000,806600000

%N Numbers k such that k and k^2 use only the digits 0, 3, 5, 6 and 8.

%C Generated with DrScheme.

%H Jonathan Wellons, <a href="/A136938/b136938.txt">Table of n, a(n) for n = 1..199</a>

%H J. Wellons, <a href="https://web.archive.org/web/20090206165028/http://jonathanwellons.com/shared-digits/">Tables of Shared Digits</a> [archived]

%e 603065805603656^2 = 363688365888386608530560566336.

%K base,nonn

%O 1,2

%A Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008