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Squares composed of digits {4,7,8}.
2

%I #13 Mar 10 2024 06:12:06

%S 4,484,784,7744,7478444484,8878844747774884,

%T 84788447488748874848488744487874447844,

%U 484844884744844787448744774844887478884,48784888484784787487448774777744787448847474447478448784

%N Squares composed of digits {4,7,8}.

%H Patrick De Geest, <a href="http://www.worldofnumbers.com/threedigits.htm">Squares containing at most three distinct digits, Index entries for related sequences</a>

%H 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_, Mar 10 2009]

%Y Cf. A053962.

%K nonn,base

%O 1,1

%A _Patrick De Geest_, Mar 15 2000

%E Two more terms from Mishima's page added by _Max Alekseyev_, Mar 10 2009

%E a(9) from _Zhao Hui Du_, Mar 10 2024