

A136442


a(3n) = 1, a(3n1) = 0 and a(3n+1) = a(n).


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, 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, 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, 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
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

0,1


COMMENTS

Relative of Stewart's choral sequence.
In fact, the binary complement of Stewart's choral sequence A116178.  Michel Dekking, Dec 06 2019
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]
Fixed point of the morphism 0>100, 1>110.  Michel Dekking, Dec 06 2019


REFERENCES

J. R. Noche, Generalized Choral Sequences, Matimyas Matematika, 31(2008), 2528.


LINKS

Table of n, a(n) for n=0..104.
Joel Reyes Noche, Generalized Choral Sequences, 2012.


PROG

(PARI) lista(nn) = {my(v=vector(3*nn)); for(k=0, nn1, v[3*k+1]=1; v[3*k+3]=0; v[3*k+2]=v[k+1]); v; } \\ Jinyuan Wang, Dec 07 2019


CROSSREFS

Cf. A116178.
Sequence in context: A089885 A190233 A143242 * A168030 A128431 A290452
Adjacent sequences: A136439 A136440 A136441 * A136443 A136444 A136445


KEYWORD

easy,nonn,changed


AUTHOR

Joel Reyes Noche (joel.noche(AT)up.edu.ph), Apr 03 2008


STATUS

approved



