A136940 - OEIS

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

%S 0,3,30,300,3000,5753,9503,30000,57530,75503,95030,300000,550503,

%T 575300,755030,950300,995003,3000000,5505030,5753000,7550300,9503000,

%U 9950030,30000000,30909503,55050300,57530000,73073753,75503000,95030000,95390753,99500300,99950003,300000000,309095030,550503000,575300000,577907753,730737530

%N Numbers k such that k and k^2 use only the digits 0, 3, 5, 7 and 9.

%C Generated with DrScheme.

%H Jonathan Wellons, <a href="/A136940/b136940.txt">Table of n, a(n) for n = 1..259</a>

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

%e 579309390909503^2 = 335599370395939357093535707009.

%K base,nonn

%O 1,2

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