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A238919 Number of self-inverse permutations p on [n] where the maximal displacement of an element equals 8. 2

%I #5 Mar 08 2014 03:32:34

%S 0,0,0,0,0,0,0,0,0,232,1452,6494,25286,90304,307450,1014007,3287295,

%T 10616111,34460913,112044376,364112828,1180542604,3814897196,

%U 12278519104,39353932208,125637022720,399749617604,1268585240868,4017417046988,12700795616136

%N Number of self-inverse permutations p on [n] where the maximal displacement of an element equals 8.

%H Joerg Arndt and Alois P. Heinz, <a href="/A238919/b238919.txt">Table of n, a(n) for n = 0..750</a>

%e a(9) = 232: 923456781, 923456871, 923457681, 923458761, ..., 987456321, 987465321, 987546321, 987654321.

%Y Column k=8 of A238889.

%K nonn

%O 0,10

%A _Joerg Arndt_ and _Alois P. Heinz_, Mar 07 2014

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Last modified September 13 17:14 EDT 2024. Contains 375910 sequences. (Running on oeis4.)