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%I #16 Mar 11 2024 07:11:48
%S 1,4,34,81,334,746,2581,3334,12869,33334,39581,81619,333334,1245454,
%T 1249666,3333334,12496666,33333334,333333334,2261749666,3333333334,
%U 3939100869,12851113246,22706069919,33333333334,78493000746
%N Numbers k such that k^2 contains only digits {1,5,6}.
%H Zhao Hui Du, <a href="/A053902/b053902.txt">Table of n, a(n) for n = 1..55</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. A053903.
%K nonn,base
%O 1,2
%A _Patrick De Geest_, Mar 15 2000
%E More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 03 2005
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