A059615 - cp's OEIS frontend

A059615 a(n) is the number of non-parallel lines determined by a pair of vertices (extreme points) in the polytope of real n X n doubly stochastic matrices. The vertices are the n! permutation matrices.

n	a(n)
1	0
2	1
3	15
4	240
5	6040
6	217365
7	10651011
8	681667840
9	55215038880
10	5521504648185
11	668102052847735
12	96206695728917136
13	16258931576714668920
14	3186750589054271109325
15	717018882536990087693835

[0, 1, 15, 240, 6040, 217365, 10651011, 681667840, 55215038880, 5521504648185, 668102052847735, 96206695728917136, 16258931576714668920, 3186750589054271109325, 717018882536990087693835]

cp's OEIS Frontend

A059615 a(n) is the number of non-parallel lines determined by a pair of vertices (extreme points) in the polytope of real n X n doubly stochastic matrices. The vertices are the n! permutation matrices.

Table of values

List of values