%I A053900
%S A053900 1,2,9,12,21,22,29,38,109,122,221,1191,20359,12017441,64352012,69362229,
%T A053900 105741122,1347014779,10715008859,664190348029,940313186572,
%U A053900 4263966676478,34479242283029,1055656895701022,2968363385585478
%N A053900 Numbers n such that n^2 contains only digits {1,4,8}.
%H A053900 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 A053900 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 A053900 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 29 2009]
%Y A053900 Cf. A053901.
%Y A053900 Sequence in context: A048768 A070226 A129829 this_sequence A126977 A102237 
               A076505
%Y A053900 Adjacent sequences: A053897 A053898 A053899 this_sequence A053901 A053902 
               A053903
%K A053900 nonn,base
%O A053900 1,2
%A A053900 Patrick De Geest (pdg(AT)worldofnumbers.com), Mar 15 2000.
%E A053900 More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 04 2005
%E A053900 Two more terms from Jon E. Schoenfield (jonscho(AT)hiwaay.net), Sep 03 
               2006
%E A053900 Further terms from Mishima's webpage. Max Alekseyev (maxale(AT)gmail.com), 
               May 29 2009