The OEIS is supported by the many generous donors to the OEIS Foundation.
%I #8 Aug 11 2024 14:41:32
%S 1,81,11881,78881777881,11187111187877881,77878887787187881
%N Squares composed of digits {1,7,8}.
%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>
%Y Cf. A053912.
%K nonn,base,more
%O 1,2
%A _Patrick De Geest_, Mar 15 2000