A136832 - OEIS

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

%S 0,1,10,11,100,101,110,1000,1001,1010,1011,1100,1101,10000,10001,

%T 10010,10011,10100,10110,11000,11001,11010,87811,100000,100001,100010,

%U 100011,100100,100101,100110,101000,101001,101100,110000,110001,110010,110100,878110,1000000,1000001,1000010,1000011,1000100,1000101,1000110,1001000,1001010

%N Numbers k such that k and k^2 use only the digits 0, 1, 2, 7 and 8.

%C Generated with DrScheme.

%H Jonathan Wellons, <a href="/A136832/b136832.txt">Table of n, a(n) for n = 1..1393</a>

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

%e 282880202080101^2 = 80021208728878778127220170201.

%K base,nonn

%O 1,3

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