%I A058463
%S A058463 2,88,688,8564136525847038,21150351639576462,20913496712251033188,
%T A058463 1864878916830083039312
%N A058463 Numbers n such that n^2 contains only digits {3,4,7}.
%H A058463 P. De Geest, <a href="http://www.worldofnumbers.com/threedigits.htm">
               Index to related sequences</a>
%H A058463 Hisanori Mishima, <a href="http://www.asahi-net.or.jp/~KC2H-MSM/mathland/
               math02/math0210.htm#347">Sporadic tridigital solutions</a>
%Y A058463 Cf. A058464.
%Y A058463 Sequence in context: A076542 A066226 A058439 this_sequence A166848 A001904 
               A053950
%Y A058463 Adjacent sequences: A058460 A058461 A058462 this_sequence A058464 A058465 
               A058466
%K A058463 nonn,base,hard,more
%O A058463 1,1
%A A058463 Patrick De Geest (pdg(AT)worldofnumbers.com), Nov 15 2000.
%E A058463 More terms from Mishima's webpage. Max Alekseyev (maxale(AT)gmail.com), 
               May 30 2009