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%I M1255 #18 Jan 01 2023 04:28:03
%S 1,2,4,12,30,90,244,776,2218,6946,20468
%N Number of zero-entropy permutations of length n.
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H A. Blokh, E. Coven, and L. Block, <a href="http://people.cas.uab.edu/~ablokh/zeren1.pdf">Zero Entropy Permutations</a>, International Journal of Bifurcation and Chaos 5 (1995), 1331-1337.
%K nonn,more
%O 1,2
%A Ethan Coven (ecoven(AT)wesleyan.edu)
%E a(6) corrected and a(7)-a(11) from _Sean A. Irvine_, Sep 27 2017
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