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%I #16 Mar 09 2024 18:50:23
%S 2,3,7,173,212,307,1557,3038,4788,6557,9607,70173,222327,649788,
%T 7015857,17173882,22349368,30402212,1514009327,5470304327,67081614057,
%U 171739460943,205534649693,473521111382,666553067838,3069922300307,210765865339462
%N Numbers k such that k^2 contains only digits {2,4,9}.
%H Zhao Hui Du, <a href="/A053924/b053924.txt">Table of n, a(n) for n = 1..29</a>
%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 Author?, <a href="http://web.archive.org/web/20080708203024/http://blue.kakiko.com/mmrmmr/htm/eqtn06.html">Source</a>(<a href="http://web.archive.org/web/20060426155831/http://blue.kakiko.com/mmrmmr/txt/eqtn06.txt">txt</a>)
%Y Cf. A053925.
%K nonn,base
%O 1,1
%A _Patrick De Geest_, Mar 15 2000
%E More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 03 2005
%E a(26) and above from _Zhao Hui Du_, Mar 09 2024
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