|
%I #17 Feb 12 2022 15:13:20
%S 2236081408416666
%N Numbers k such that k^2 contains only digits {0,5,6}, not ending with zero.
%C No more terms to 2 * 10^19. - _Charles R Greathouse IV_, Aug 20 2011
%H P. De Geest, <a href="http://www.worldofnumbers.com/threedigits.htm">Index to related sequences</a>
%H Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/NonRecursions.html">Non Recursions</a>
%H Hisanori Mishima, <a href="http://www.asahi-net.or.jp/~KC2H-MSM/mathland/math02/math0210.htm">Sporadic tridigital solutions</a>
%H <a href="/index/O#oneterm">Index entries for one-term sequences</a>
%Y Cf. A058446.
%K nonn,base,hard,more,bref
%O 1,1
%A _Patrick De Geest_, Nov 15 2000
| 