%I A053909
%S A053909 1,16,81,1681,11881,1666681,818188816,6168688681,6661661161,
%T A053909 611686666816,1111166866161,11168168618161,18886681666161,
%U A053909 666868181611681,866686868686116,16668111611611681,668881818661618116
%N A053909 Squares composed of digits {1,6,8}.
%H A053909 P. De Geest, <a href="http://www.worldofnumbers.com/threedigits.htm">
               Squares containing at most three distinct digits, Index entries for 
               related sequences</a>
%Y A053909 Cf. A053908.
%Y A053909 Sequence in context: A046453 A030514 A056571 this_sequence A151502 A030693 
               A159501
%Y A053909 Adjacent sequences: A053906 A053907 A053908 this_sequence A053910 A053911 
               A053912
%K A053909 nonn,base
%O A053909 1,2
%A A053909 Patrick De Geest (pdg(AT)worldofnumbers.com), Mar 15 2000.