%I A053899
%S A053899 1,4,144,441,1444,7744,7447441,4147177477444,7174474747441,
%T A053899 1447471174444717444
%N A053899 Squares composed of digits {1,4,7}.
%H A053899 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>
               )
%H A053899 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 A053899 Cf. A053898.
%Y A053899 Sequence in context: A048432 A122422 A083688 this_sequence A058414 A053891 
               A053897
%Y A053899 Adjacent sequences: A053896 A053897 A053898 this_sequence A053900 A053901 
               A053902
%K A053899 nonn,base,more
%O A053899 1,2
%A A053899 Patrick De Geest (pdg(AT)worldofnumbers.com), Mar 15 2000.
%E A053899 More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 04 2005