A284881 Difference sequence of A284878.

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

Clark Kimberling, Table of n, a(n) for n = 1..10000

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

Cf. A284878, A284882, A284883, A284884.

Sequence in context: A140074 A351957 A342004 * A374048 A090174 A165556

Adjacent sequences: A284878 A284879 A284880 * A284882 A284883 A284884

Keyword

easy,sign

Author

Clark Kimberling, Apr 15 2017

Status

approved