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%I #12 Dec 07 2019 01:31:11
%S 1,1,0,1,1,0,1,0,0,1,1,0,1,1,0,1,0,0,1,1,0,1,0,0,1,0,0,1,1,0,1,1,0,1,
%T 0,0,1,1,0,1,1,0,1,0,0,1,1,0,1,0,0,1,0,0,1,1,0,1,1,0,1,0,0,1,1,0,1,0,
%U 0,1,0,0,1,1,0,1,0,0,1,0,0,1,1,0,1,1,0,1,0,0,1,1,0,1,1,0,1,0,0,1,1,0,1,0,0
%N a(3n) = 1, a(3n-1) = 0 and a(3n+1) = a(n).
%C Relative of Stewart's choral sequence.
%C In fact, the binary complement of Stewart's choral sequence A116178. - _Michel Dekking_, Dec 06 2019
%C A generalized choral sequence c(3n+r_0)=0, c(3n+r_1)=1, c(3n+r_c)=c(n), with r_0=2, r_1=0, and r_c=1. [Joel Reyes Noche (joel.noche(AT)up.edu.ph), Jul 09 2009]
%C Fixed point of the morphism 0->100, 1->110. - _Michel Dekking_, Dec 06 2019
%D J. R. Noche, Generalized Choral Sequences, Matimyas Matematika, 31(2008), 25-28.
%H Joel Reyes Noche, <a href="https://joelreyesnoche.wordpress.com/2012/11/15/generalized-choral-sequences/">Generalized Choral Sequences</a>, 2012.
%o (PARI) lista(nn) = {my(v=vector(3*nn)); for(k=0, nn-1, v[3*k+1]=1; v[3*k+3]=0; v[3*k+2]=v[k+1]); v; } \\ _Jinyuan Wang_, Dec 07 2019
%Y Cf. A116178.
%K easy,nonn
%O 0,1
%A Joel Reyes Noche (joel.noche(AT)up.edu.ph), Apr 03 2008
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