A179721 Number of permutations of 1..n with the sequence of sums of 4 adjacent elements having exactly 2 maxima

0, 180, 2520, 25200, 211680, 1839600, 17186400, 168168000, 1676875200, 16972355400

Offset

5,2

Links

Table of n, a(n) for n=5..14.

Crossrefs

Sequence in context: A364162 A184225 A099106 * A112068 A058835 A008432

Adjacent sequences: A179718 A179719 A179720 * A179722 A179723 A179724

Keyword

nonn

Author

R. H. Hardin Jul 25 2010

Status

approved