%I #13 Aug 11 2024 14:41:32

%S 6,26,194,876,18376,25226323103806424,1932967502917049474

%N Numbers k such that k^2 contains only digits {3,6,7}.

%H P. De Geest, <a href="https://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#367">Sporadic tridigital solutions</a>

%Y Cf. A053947.

%K nonn,base,more

%O 1,1

%A _Patrick De Geest_, Mar 15 2000

%E Two more terms from Mishima's webpage added by _Max Alekseyev_, Jan 28 2012