%I #20 Mar 24 2021 15:35:58
%S 1,1,0,1,1,0,1,0,1,1,0,1,1,0,1,0,1,1,0,1,0,1,1,0,1,1,0,1,0,1,1,0,1,1,
%T 0,1,0,1,1,0,1,0,1,1,0,1,1,0,1,0,1,1,0,1,0,1,1,0,1,1,0,1,0,1,1,0,1,1,
%U 0,1,0,1,1,0,1,0,1,1,0,1,1,0,1,0,1,1,0,1,1,0,1,0,1,1,0,1,0,1,1,0,1,1,0,1,0
%N Characteristic function of (A000201 prefixed with 0).
%H Lord, E. A, Ranganathan, S. and Subramaniam, A., <a href="http://materials.iisc.ernet.in/~lord/webfiles/vop.pdf">Stacking sequences and symmetry properties of trigonal vacancy-ordered phases</a>, Phil. Mag. A 82 (2002) 255-268.
%H N. J. A. Sloane, <a href="/A115004/a115004.txt">Families of Essentially Identical Sequences</a>, Mar 24 2021 (Includes this sequence)
%H <a href="/index/Ch#char_fns">Index entries for characteristic functions</a>
%Y Essentially the same as A005614. Cf. A096270, A189479.
%Y The following sequences are all essentially the same, in the sense that they are simple transformations of each other, with A000201 as the parent: A000201, A001030, A001468, A001950, A003622, A003842, A003849, A004641, A005614, A014675, A022342, A088462, A096270, A114986, A124841. - _N. J. A. Sloane_, Mar 11 2021
%K nonn,easy
%O 0,1
%A _N. J. A. Sloane_, Feb 28 2006