A137000 - OEIS

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

%S 1,2,9,11,12,21,22,29,91,122,141,212,221,222,288,441,911,921,1118,

%T 1191,1488,2212,2988,11141,11882,14829,21212,22229,42921,49441,49829,

%U 49891,122182,141118,141421,221911,491141,491212,498891,498928,498941,921911,992421,1114891,1411428,2211882,2212288,2981428,2988118,4911122,4911428,4921882

%N Numbers k such that k and k^2 use only the digits 1, 2, 4, 8 and 9.

%C Generated with DrScheme.

%H Jonathan Wellons, <a href="/A137000/b137000.txt">Table of n, a(n) for n = 1..666</a>

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

%e 942984212484191^2 = 889219224994429881419424924481.

%K base,nonn

%O 1,2

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