A340503 Fixed under 0 -> 02, 1 -> 32, 2 -> 01, 3 -> 31.

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

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 1.7.

Links

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

Crossrefs

Cf. A020985, A020987, A100260, A340504.

Sequence in context: A235987 A104597 A182936 * A072662 A030010 A321297

Adjacent sequences: A340500 A340501 A340502 * A340504 A340505 A340506

Keyword

nonn

Author

N. J. A. Sloane, Jan 17 2021

Status

approved