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A006948 Zero-entropy permutations of length n.
(Formerly M1255)
1
1, 2, 4, 12, 30, 90, 244, 776, 2218, 6946, 20468 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

REFERENCES

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

Table of n, a(n) for n=1..11.

A. Blokh, E. Coven, L. Block, Zero Entropy Permutations, International Journal of Bifurcation and Chaos 5 (1995), 1331-1337

CROSSREFS

Sequence in context: A059412 A079472 A148186 * A148187 A148188 A148189

Adjacent sequences:  A006945 A006946 A006947 * A006949 A006950 A006951

KEYWORD

nonn,more

AUTHOR

Ethan Coven (ecoven(AT)wesleyan.edu)

EXTENSIONS

a(6) corrected and a(7)-a(11) from Sean A. Irvine, Sep 27 2017

STATUS

approved

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Last modified January 20 23:20 EST 2019. Contains 319343 sequences. (Running on oeis4.)