%I #16 Mar 10 2024 09:17:26
%S 4,7744,473344,73344434433347373773443373373444,
%T 447337374477734734334374744437444,
%U 437374344733334774447744773373477443344,73444333373444774773333473377377773344743344373433344
%N Squares composed of digits {3,4,7}.
%H Patrick De Geest, <a href="http://www.worldofnumbers.com/threedigits.htm">Index to related sequences</a>
%H Hisanori Mishima, <a href="http://www.asahi-net.or.jp/~KC2H-MSM/mathland/math02/math0210.htm#347">Sporadic tridigital solutions</a>
%Y Cf. A058463.
%K nonn,base
%O 1,1
%A _Patrick De Geest_, Nov 15 2000
%E More terms from Mishima's page added by _Max Alekseyev_, May 30 2009
%E a(7) from _Zhao Hui Du_, Mar 10 2024