A226286 [n/2]!*[(n+1)/2]!*C([n/2],5)*C([(n+1)/2],5).

0, 0, 0, 0, 0, 0, 0, 0, 0, 14400, 518400, 18662400, 457228800, 11202105600, 238978252800, 5098202726400, 103238605209600, 2090581755494400, 41811635109888000, 836232702197760000, 16864026160988160000

Offset: 1

Author

R. H. Hardin, connection of formula with combinatoric problem via N. J. A. Sloane in the Sequence Fans Mailing List, Jun 02 2013

Keywords

• nonn

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

• R. H. Hardin, Table of n, a(n) for n = 1..210