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A284881
Difference sequence of A284878.
6
1, -1, 1, 0, -1, 0, 1, -1, 1, 0, -1, 0, 1, 0, -1, 0, 1, -1, 1, -1, 1, 0, -1, 0, 1, -1, 1, 0, -1, 0, 1, 0, -1, 0, 1, -1, 1, -1, 1, 0, -1, 0, 1, 0, -1, 0, 1, -1, 1, -1, 1, 0, -1, 0, 1, -1, 1, 0, -1, 0, 1, -1, 1, 0, -1, 0, 1, 0, -1, 0, 1, -1, 1, -1, 1, 0, -1, 0
OFFSET
1
COMMENTS
This is a 3-automatic sequence. See Allouche et al. link. - Michel Dekking, Oct 05 2020
LINKS
J.-P. Allouche, F. M. Dekking, and M. Queffélec, Hidden automatic sequences, arXiv:2010.00920 [math.NT], 2020.
EXAMPLE
A284878 = (0,1,0,1,1,0,0,1,0,1,1,0,0,1,...), with differences (1,-1,1,0,-1,0,1,-1,1,0,...).
MATHEMATICA
s = Nest[Flatten[# /. {0 -> {0, 1}, 1 -> {0, 1, 1, 01}}] &, {0}, 7]; (* A284878 *)
Differences[s] (* A284881 *)
CROSSREFS
KEYWORD
easy,sign
AUTHOR
Clark Kimberling, Apr 15 2017
STATUS
approved