A136870 - OEIS

%I #7 Apr 12 2024 09:51:26

%S 0,1,10,81,100,810,816,1000,1081,8100,8160,10000,10801,10810,81000,

%T 81551,81600,81651,100000,108010,108100,810000,815510,815881,816000,

%U 816510,1000000,1008001,1008051,1080100,1081000,8100000,8155100,8158810,8160000,8165100,10000000,10080010,10080510,10568151,10801000,10810000,81000000,81551000

%N Numbers k such that k and k^2 use only the digits 0, 1, 5, 6 and 8.

%C Generated with DrScheme.

%H Jonathan Wellons, <a href="/A136870/b136870.txt">Table of n, a(n) for n = 1..235</a>

%H J. Wellons, <a href="https://web.archive.org/web/20090206165028/http://jonathanwellons.com/shared-digits/">Tables of Shared Digits</a> [archived]

%e 816505086868151^2 = 666680556881566810585658158801.

%K base,nonn

%O 1,3

%A Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008