%I A058421
%S A058421 1,9,109,901,1009,9001,10009,10401,90001,100009,100901,900001,1000009,
%T A058421 1004001,8954391,9000001,10000009,10009001,34351141,90000001,100000009,
%U A058421 100040001,900000001,1000000009,1000090001,3163554991,9000000001
%N A058421 Numbers n such that n^2 contains only digits {0,1,8}, not ending with 
               zero.
%H A058421 P. De Geest, <a href="http://www.worldofnumbers.com/threedigits.htm">
               Index to related sequences</a>
%H A058421 Hisanori Mishima, <a href="http://www.asahi-net.or.jp/~KC2H-MSM/mathland/
               math02/math0210.htm#018">Sporadic tridigital solutions</a>
%Y A058421 Cf. A058422.
%Y A058421 Sequence in context: A001691 A157906 A166846 this_sequence A128876 A105974 
               A053912
%Y A058421 Adjacent sequences: A058418 A058419 A058420 this_sequence A058422 A058423 
               A058424
%K A058421 nonn,base
%O A058421 1,2
%A A058421 Patrick De Geest (pdg(AT)worldofnumbers.com), Nov 15 2000.