%I #12 Aug 28 2015 20:55:15
%S 0,1,2,10,20,100,200,1000,1001,1002,2000,2001,2002,10000,10010,10020,
%T 20000,20010,20020,100000,100100,100200,200000,200100,200200,1000000,
%U 1000001,1000002,1001000,1001001,1001002,1002000,1002001,1002002,2000000,2000001,2000002,2001000,2001001,2001002,2002000,2002001,2002002
%N In base 3, 0, together with numbers of the form i00j00k00m00... where i = 1 or 2 and j,k,m,... are 0, 1, or 2.
%C A low density sequence with the property that every nonnegative integer is the sum of at most three terms.
%D Veit Elser, Posting to Math Fun Mailing List, Aug 28 2015
%Y Cf. A261661, A261662.
%K nonn,base
%O 1,3
%A _N. J. A. Sloane_, Aug 28 2015
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