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 A136816 Numbers n such that n and the square of n use only the digits 0, 1, 2 and 4. 2

%I

%S 0,1,2,10,11,12,20,21,100,101,102,110,120,200,201,210,1000,1001,1002,

%T 1010,1011,1012,1020,1021,1100,1101,1102,1200,1201,2000,2001,2010,

%U 2011,2100,2101,10000,10001,10002,10010,10011,10012,10020,10021,10100,10110,10120,10200,10210,11000,11001,11002,11010,11011,11020,12000,12001,12010,20000,20001

%N Numbers n such that n and the square of n use only the digits 0, 1, 2 and 4.

%C Generated with DrScheme

%C Subsequence of A136817-A136821. - M. F. Hasler, Jan 24 2008

%H Jonathan Wellons, <a href="/A136816/b136816.txt">Table of n, a(n) for n=1..1569</a>

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

%e 21010001010^2 = 441420142440201020100

%K base,nonn

%O 1,3

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

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Last modified June 26 10:12 EDT 2019. Contains 324375 sequences. (Running on oeis4.)