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A137053 Numbers k such that k and k^2 use only the digits 1, 4, 6, 7 and 9. 1

%I

%S 1,4,7,14,69,119,4119,4446,4469,6479,41469,44469,69114,641619,679479,

%T 4116974,4176974,4179676,4411479,6416969,6477974,6646614,6646764,

%U 6691771,6794446,9719114,41766969,41794676,41799479,64169446,66464119,66679676,67949796,97466771,99747176,414476974,441491469,447179119,679679676,997496614

%N Numbers k such that k and k^2 use only the digits 1, 4, 6, 7 and 9.

%C Generated with DrScheme.

%H Jonathan Wellons, <a href="/A137053/b137053.txt">Table of n, a(n) for n = 1..143</a>

%H J. Wellons, <a href="http://jonathanwellons.com/shared-digits/">Tables of Shared Digits</a>

%e 647416146496719^2 = 419147666744661117496677764961.

%K base,nonn

%O 1,2

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

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Last modified October 5 04:47 EDT 2022. Contains 357242 sequences. (Running on oeis4.)