A179720 Number of permutations of 1..n with the sequence of sums of 4 adjacent elements having exactly 1 maximum.

0, 24, 120, 540, 2520, 12600, 75600, 453600, 2772000, 17001600, 110510400, 714714000, 4666662000

Offset

3,2

Links

Table of n, a(n) for n=3..15.

Crossrefs

Sequence in context: A052760 A392827 A392767 * A235702 A052754 A392831

Adjacent sequences: A179717 A179718 A179719 * A179721 A179722 A179723

Keyword

nonn

Author

R. H. Hardin, Jul 25 2010

Status

approved