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A137012 Numbers k such that k and k^2 use only the digits 1, 2, 5 and 9. 0

%I #4 Jul 05 2021 12:01:54

%S 1,5,11,15,1515

%N Numbers k such that k and k^2 use only the digits 1, 2, 5 and 9.

%C Generated with DrScheme.

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

%e 1515^2 = 2295225.

%K base,nonn

%O 1,2

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

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Last modified March 28 10:55 EDT 2024. Contains 371241 sequences. (Running on oeis4.)