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A317193 First differences of A317192. 2
1, -1, 1, 0, 1, -1, 1, 1, -1, 1, 0, 1, -1, 1, -1, 1, 0, 1, -1, 1, 1, -1, 1, 0, 1, -1, 1, 0, 1, -1, 1, 1, -1, 1, 0, 1, -1, 1, -1, 1, 0, 1, -1, 1, 1, -1, 1, 0, 1, -1, 1, 1, -1, 1, 0, 1, -1, 1, -1, 1, 0, 1, -1, 1, 1, -1, 1, 0, 1, -1, 1, 0, 1, -1, 1, 1, -1, 1, 0, 1, -1, 1, -1, 1, 0, 1, -1, 1, 1, -1, 1, 0, 1, -1, 1, -1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1

COMMENTS

It is known that the entries belong to the set {-1, 0, 1}.

Conjecture: This is an encoded version of the ternary tribonacci word

a,b,a,c,a,b,a,a,b,a,c,a,b,a,b,a,c,a,b,a,a,b,a,c,a,...

(see A080843) under the map a -> 1, b -> -1, c -> 0.

LINKS

N. J. A. Sloane, Table of n, a(n) for n = 1..49999

CROSSREFS

Cf. A317192, A140100, A140101, A140102, A140103, A080843.

Sequence in context: A253414 A127872 A129564 * A293163 A267871 A329678

Adjacent sequences:  A317190 A317191 A317192 * A317194 A317195 A317196

KEYWORD

sign

AUTHOR

N. J. A. Sloane, Jul 31 2018

STATUS

approved

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Last modified September 18 02:19 EDT 2020. Contains 337164 sequences. (Running on oeis4.)