%I A053881
%S A053881 1,4,121,144,441,1444,114244,2214144,11142244,121242121,421111441,
%T A053881 1111422244,44424414441,111114222244,11111142222244,214222214414224,
%U A053881 242441124211441,411244411422244,1111111422222244,2111211444222241
%N A053881 Squares composed of digits {1,2,4}.
%H A053881 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 A053881 Cf. A053880.
%Y A053881 Sequence in context: A071304 A006607 A062081 this_sequence A075114 A017186 
               A098839
%Y A053881 Adjacent sequences: A053878 A053879 A053880 this_sequence A053882 A053883 
               A053884
%K A053881 nonn,base
%O A053881 1,2
%A A053881 Patrick De Geest (pdg(AT)worldofnumbers.com), Mar 15 2000.