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Numbers k such that k and k^2 use only the digits 1, 3, 4, 5 and 8.
1

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

%S 1,38,188,1188,18388,58188,135438,185888,334388,381888,1145188,

%T 1831538,3334388,3338141,3338388,3441141,5843388,18855188,33338388,

%U 33344438,38151188,185433388,185558188,185844438,185854388,333344438,338841141,385155188,1153881888,1155185888,1353344538,1354451488,1881844438,3381588141

%N Numbers k such that k and k^2 use only the digits 1, 3, 4, 5 and 8.

%C Generated with DrScheme.

%H Jonathan Wellons, <a href="/A137022/b137022.txt">Table of n, a(n) for n = 1..106</a>

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

%e 558138141814538^2 = 311518185348185331851188153444.

%K base,nonn

%O 1,2

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