%I A053904
%S A053904 1,9,109,296848141,4341833151859,3399291958357679641,
%T A053904 2412237158970509643109
%N A053904 Numbers n such that n^2 contains only digits {1,5,8}.
%H A053904 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 A053904 H. Mishima <a href="http://www.asahi-net.or.jp/~KC2H-MSM/mathland/math02/
               math0210.htm">Squares consisted of 3 different digits</a> [From Max 
               Alekseyev (maxale(AT)gmail.com), May 21 2009]
%Y A053904 Cf. A053905.
%Y A053904 Sequence in context: A105974 A053912 A053894 this_sequence A058607 A082723 
               A143167
%Y A053904 Adjacent sequences: A053901 A053902 A053903 this_sequence A053905 A053906 
               A053907
%K A053904 nonn,base,more
%O A053904 1,2
%A A053904 Patrick De Geest (pdg(AT)worldofnumbers.com), Mar 15 2000.
%E A053904 One more term from Jon E. Schoenfield (jonscho(AT)hiwaay.net), Sep 03 
               2006
%E A053904 Two more terms from Mishima's webpage. Max Alekseyev (maxale(AT)gmail.com), 
               May 21 2009