A136942 - OEIS

%I #7 Apr 12 2024 09:51:27

%S 0,3,30,300,3000,30000,300000,550503,3000000,5505030,30000000,

%T 55050300,300000000,550503000,3000000000,5505030000,30000000000,

%U 55050300000,300000000000,550500050003,550503000000,3000000000000,3000505050003,5505000500030,5505030000000,30000000000000,30005050500030,55050005000003

%N Numbers k such that k and k^2 use only the digits 0, 3, 5 and 9.

%C Generated with DrScheme.

%H Jonathan Wellons, <a href="/A136942/b136942.txt">Table of n, a(n) for n = 1..35</a>

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

%e 3000505050003^2 = 9003030555093505530300009.

%K base,nonn

%O 1,2

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