%I #7 Apr 12 2024 09:51:27
%S 1,9,9859,99859,771891,987917,8879859,75879891,75891891,89191859,
%T 98575859,881575859,985889891,999575859,999787917,7181581859,
%U 8881991891,8885875859,8888171859,8897857917,71775871859,88758771891,88881717917,99597789891,99857857917,99997857917,99999575859,718175178891,871711871891,888571871891
%N Numbers k such that k and k^2 use only the digits 1, 5, 7, 8 and 9.
%C Generated with DrScheme.
%H Jonathan Wellons, <a href="/A137063/b137063.txt">Table of n, a(n) for n = 1..62</a>
%H J. Wellons, <a href="https://web.archive.org/web/20090206165028/http://jonathanwellons.com/shared-digits/">Tables of Shared Digits</a> [archived]
%e 87175179719859^2 = 7599511959189715877718979881.
%K base,nonn
%O 1,2
%A Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008