%I A053913
%S A053913 1,81,11881,78881777881,11187111187877881,77878887787187881
%N A053913 Squares composed of digits {1,7,8}.
%H A053913 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 A053913 Cf. A053912.
%Y A053913 Sequence in context: A059988 A017020 A058422 this_sequence A053895 A053905 
               A143005
%Y A053913 Adjacent sequences: A053910 A053911 A053912 this_sequence A053914 A053915 
               A053916
%K A053913 nonn,base,more
%O A053913 1,2
%A A053913 Patrick De Geest (pdg(AT)worldofnumbers.com), Mar 15 2000.