A137128 - OEIS

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

%S 3,6,7,63,9694,797963,967974,973364,9736363,99967343,796479376,

%T 973639376,7977339643,9667799474,9676449736,9676773736,9997339643,

%U 9997396643,79774334643,79979334643,96676443736,96676763736,97333344474,97464694364,797796639376,966433977764,966667677974,966676674694,967649977764

%N Numbers k such that k and k^2 use only the digits 3, 4, 6, 7 and 9.

%C Generated with DrScheme.

%H Jonathan Wellons, <a href="/A137128/b137128.txt">Table of n, a(n) for n = 1..91</a>

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

%e 997364767473736^2 = 994736479397939479743449797696.

%K base,nonn

%O 1,1

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