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%I #30 May 22 2023 08:57:17
%S 1,0,0,1,0,0,0,1,1,0,1,0,0,0,1,0,0,0,0,1,1,1,0,1,1,0,0,1,0,1,0,1,0,0,
%T 0,0,1,1,0,0,1,0,0,0,0,1,0,0,0,0,0,1,1,1,1,0,1,1,1,0,0,1,1,0,1,0,1,1,
%U 0,0,0,1,0,1,1,0,1,0,1,0,0,1,0,0,1,0,1,0,0,0,0
%N Write n in base 2, complement each digit (d -> 1-d) and append the complemented digits to the sequence.
%H Harvey P. Dale, <a href="/A030315/b030315.txt">Table of n, a(n) for n = 0..1000</a>
%H Eric W. Weisstein, <a href="http://mathworld.wolfram.com/ChampernowneConstant.html">Champernowne Constant</a>.
%F a(n) = 1 - A030190(n). - _Amiram Eldar_, May 22 2023
%e To get the initial terms:
%e 0 -> 1
%e 1 -> 0
%e 2 = 10 -> 0, 1
%e 3 = 11 -> 0, 0
%e 4 = 100 -> 0, 0, 1
%e 5 = 101 -> 0, 1, 0,
%e ...
%e and concatenating 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 0, ... gives the start of the sequence. - _N. J. A. Sloane_, Jan 30 2023
%t Table[IntegerDigits[n,2]/.{1->0,0->1},{n,0,30}]//Flatten (* _Harvey P. Dale_, Jan 30 2023 *)
%Y Cf. A030190, A180433. [_Jonathan Vos Post_, Sep 05 2010]
%K nonn,base
%O 0,1
%A _Clark Kimberling_
%E a(0)=1 added by _Jonathan Vos Post_, Sep 05 2010
%E Edited by _N. J. A. Sloane_, Jan 30 2023
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