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Numbers k such that k^2 contains only digits {2,3,6}.
1

%I #12 Mar 09 2024 18:39:22

%S 6,14945311394,179619783606,2514602599284156,

%T 251462176552105392823457806

%N Numbers k such that k^2 contains only digits {2,3,6}.

%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#236">Sporadic tridigital solutions</a>

%Y Cf. A058458.

%K nonn,base,hard,more

%O 1,1

%A _Patrick De Geest_, Nov 15 2000

%E a(5) from _Zhao Hui Du_, Mar 09 2024