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A226286
[n/2]!*[(n+1)/2]!*C([n/2],5)*C([(n+1)/2],5).
3
0, 0, 0, 0, 0, 0, 0, 0, 0, 14400, 518400, 18662400, 457228800, 11202105600, 238978252800, 5098202726400, 103238605209600, 2090581755494400, 41811635109888000, 836232702197760000, 16864026160988160000
OFFSET
1,10
COMMENTS
Number of permutations of n elements with 10 odd displacements.
Column 6 of A226288.
Column k=10 of A145893, a diagonal of A145894. - Alois P. Heinz, May 29 2014
LINKS
CROSSREFS
Sequence in context: A190469 A237372 A250851 * A203729 A144649 A166371
KEYWORD
nonn
AUTHOR
R. H. Hardin, connection of formula with combinatoric problem via N. J. A. Sloane in the Sequence Fans Mailing List, Jun 02 2013
STATUS
approved