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Numbers k such that k and k^2 use only the digits 2, 3, 6, 8 and 9.
1

%I #8 Apr 12 2024 09:51:27

%S 3,6,63,83,833,836,983,2633,2886,2983,29883,62633,93233,96383,96886,

%T 98336,629836,826333,962633,6266333,8322823,9996963,26389323,26393633,

%U 28982233,29388233,29893633,29896963,29989886,62662823,82663333,92888233,262366886,289826383,298226983,298828323,632328923,826823333,932399233,932696833

%N Numbers k such that k and k^2 use only the digits 2, 3, 6, 8 and 9.

%C Generated with DrScheme.

%H Jonathan Wellons, <a href="/A137090/b137090.txt">Table of n, a(n) for n = 1..223</a>

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

%e 629838263868323^2 = 396696238632663269839882832329.

%K base,nonn

%O 1,1

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