A014982 - OEIS

A014982

Number of "coherent" reduced decompositions for the longest permutation n n-1 n-2 ... 3 2 1 in the symmetric group on n letters.

1, 1, 2, 12, 272, 21666 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,3`
	COMMENTS	`For definition of "coherent", see L J. Billera and B. Sturmfels link.`
	LINKS	`Table of n, a(n) for n=1..6.` `L. J. Billera and B. Sturmfels, Iterated fiber polytopes, Mathematika, 41 (1994), no. 2, 348-363.`
	CROSSREFS	`Sequence in context: A091504 A098137 A214005 * A012444 A012754 A083568` `Adjacent sequences: A014979 A014980 A014981 * A014983 A014984 A014985`
	KEYWORD	`nonn,more`
	AUTHOR	`Victor Reiner (reiner(AT)math.umn.edu)`
	STATUS	`approved`

Last modified May 28 07:06 EDT 2022. Contains 354112 sequences. (Running on oeis4.)