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%I #15 Oct 18 2019 20:06:01
%S 576,676,5776,756767765776,6667676657766656676,
%T 5677575655766577766776565776,5757665766657575655756675556,
%U 665556775565576667756557666775667776,777666657567776675657756675676567555755556,6565656667556566576676575665776756666556676
%N Squares composed of digits {5,6,7}.
%H P. De Geest, <a href="http://www.worldofnumbers.com/threedigits.htm">Squares containing at most three distinct digits, Index entries for related sequences</a>
%H Author?, <a href="http://web.archive.org/web/20080708203024/http://blue.kakiko.com/mmrmmr/htm/eqtn06.html">Source</a>(<a href="http://web.archive.org/web/20060426155831/http://blue.kakiko.com/mmrmmr/txt/eqtn06.txt">txt</a>)
%H H. Mishima, <a href="http://www.asahi-net.or.jp/~KC2H-MSM/mathland/math02/math0210.htm#567">Squares consisted of 3 different digits</a>
%F a(n) = A053968(n)^2.
%Y Cf. A053968.
%K nonn,base
%O 1,1
%A _Patrick De Geest_, Mar 15 2000
%E More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 03 2005
%E Two more terms from _Jon E. Schoenfield_, Sep 04 2006
%E Three more terms from Mishima's website added by _Max Alekseyev_, May 02 2011
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