%I A053964
%S A053964 2,3,7,88,212,893,69242288,8819171038
%N A053964 Numbers n such that n^2 contains only digits {4,7,9}.
%H A053964 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 A053964 Author?, <a href="http://blue.kakiko.com/mmrmmr/htm/eqtn06.html">Source</
               a>(<a href="http://blue.kakiko.com/mmrmmr/txt/eqtn06.txt">txt</a>
               )
%Y A053964 Cf. A053965.
%Y A053964 Sequence in context: A084729 A101117 A065002 this_sequence A062578 A062529 
               A058443
%Y A053964 Adjacent sequences: A053961 A053962 A053963 this_sequence A053965 A053966 
               A053967
%K A053964 nonn,base,more
%O A053964 1,1
%A A053964 Patrick De Geest (pdg(AT)worldofnumbers.com), Mar 15 2000.
%E A053964 More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 03 2005