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A136913 Numbers k such that k and k^2 use only the digits 0, 2, 5, 6 and 8. 1

%I #8 Jul 05 2021 08:45:43

%S 0,5,25,50,225,250,255,500,505,825,2250,2255,2500,2550,2555,2585,2865,

%T 5000,5005,5025,5050,8250,22500,22550,22805,22865,25000,25005,25025,

%U 25500,25505,25550,25850,28650,50000,50005,50025,50050,50225,50250,50255,50500,50555,50605,82500,82585,82805,82865,225000,225500,225505,228050,228225,228650

%N Numbers k such that k and k^2 use only the digits 0, 2, 5, 6 and 8.

%C Generated with DrScheme.

%H Jonathan Wellons, <a href="/A136913/b136913.txt">Table of n, a(n) for n = 1..1310</a>

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

%e 50562656205^2 = 2556582202505025002025.

%K base,nonn

%O 1,2

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

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Last modified March 29 04:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)