A083570 - OEIS

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A083570

A de Bruijn sequence of length 9 over {0, 1, 2}, repeated.

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

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OFFSET

0,5

COMMENTS

Each of the 9 pairs 00, 01, ..., 22 occurs exactly once in each period.

LINKS

Table of n, a(n) for n=0..98.

F. Mendivil, Fractals, graphs and fields, Amer. Math. Monthly, 110 (No. 6, 2003), 503-515.

MATHEMATICA

PadRight[{}, 99, {0, 0, 1, 1, 2, 2, 1, 0, 2}] (* Harvey P. Dale, Nov 23 2011 *)

CROSSREFS

Sequence in context: A133624 A377941 A030110 * A287407 A153240 A153241

Adjacent sequences: A083567 A083568 A083569 * A083571 A083572 A083573

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jun 14 2003

STATUS

approved