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A137002 Numbers k such that k and k^2 use only the digits 1, 2 and 5. 0

%I

%S 1,5,11,15

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

%C Sequence terminates.

%C Generated with DrScheme.

%C Numbers appearing in A131082; subsequence of A031153, A137003. - _M. F. Hasler_, Jan 24 2008

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

%e 15^2 = 225.

%K base,fini,nonn

%O 1,2

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

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Last modified May 27 10:32 EDT 2022. Contains 354096 sequences. (Running on oeis4.)