A340504 Fixed under 0 -> 03, 1 -> 23, 2 -> 21, 3 -> 01.

0, 3, 0, 1, 0, 3, 2, 3, 0, 3, 0, 1, 2, 1, 0, 1, 0, 3, 0, 1, 0, 3, 2, 3, 2, 1, 2, 3, 0, 3, 2, 3, 0, 3, 0, 1, 0, 3, 2, 3, 0, 3, 0, 1, 2, 1, 0, 1, 2, 1, 2, 3, 2, 1, 0, 1, 0, 3, 0, 1, 2, 1, 0, 1, 0, 3, 0, 1, 0, 3, 2, 3, 0, 3, 0, 1, 2, 1, 0, 1, 0, 3, 0, 1, 0, 3, 2, 3, 2, 1, 2, 3, 0, 3, 2, 3, 2, 1, 2, 3, 2, 1, 0, 1, 2

Offset

1,2

Comments

Yet another version of the Rudin-Shapiro sequence A020987.

References

Dekking, Michel, Michel Mendes France, and Alf van der Poorten. "Folds." The Mathematical Intelligencer, 4.3 (1982): 130-138 & front cover, and 4:4 (1982): 173-181 (printed in two parts). See Observation 1.17.

Links

Table of n, a(n) for n=1..105.

Crossrefs

Cf. A020985, A020987, A100260, A340503.

Sequence in context: A247254 A035640 A079327 * A242447 A238342 A123878

Adjacent sequences: A340501 A340502 A340503 * A340505 A340506 A340507

Keyword

nonn

Author

N. J. A. Sloane, Jan 17 2021

Status

approved