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A144600
Christoffel word of slope 2/11.
0
0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0
OFFSET
0,1
FORMULA
a(n) = a(n-13). - R. J. Mathar, May 30 2025
G.f.: -x^6*(1+x^2)*(x^4-x^2+1) / ( (x-1)*(1+x+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^9+x^10+x^11+x^12) ). - R. J. Mathar, May 30 2025
CROSSREFS
See A144595 for further details.
Sequence in context: A025459 A079365 A037822 * A379478 A011686 A275305
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Jan 13 2009
STATUS
approved