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Numbers k such that k^2 contains only digits {0,3,6}, not ending with zero.
1

%I #8 Aug 11 2024 14:41:33

%S 6,1740871344,25107103902348156

%N Numbers k such that k^2 contains only digits {0,3,6}, not ending with zero.

%H P. De Geest, <a href="https://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#036">Sporadic tridigital solutions</a>

%Y Cf. A058432.

%K nonn,base,hard,more,bref

%O 1,1

%A _Patrick De Geest_, Nov 15 2000