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%I #20 Apr 13 2021 23:43:25
%S 1,100,11,1000,10,101,1011,110,1101,10001,1110,10010,1111,10000,111,
%T 1001,1010,1100,10011,10100,10101,10110,11000,10111,100000,11011,
%U 100001,11001,11010,11100,100010,11101,100011
%N Base-2 analog of A231881 (written in base 2).
%C A231889 (and A231890) eventually merges with A231891 (and A231892). For n > 29, a(n) = A231889(n+1). - _Hans Havermann_, Nov 18 2013
%H Hans Havermann, <a href="/A231891/b231891.txt">Table of n, a(n) for n = 0..1000</a>
%Y Cf. A228407, A231880, A231881, A231889-A231892.
%K nonn,base
%O 0,2
%A _N. J. A. Sloane_, Nov 17 2013
%E More terms from _Hans Havermann_, Nov 18 2013