A112226 - cp's OEIS frontend

A112226 Table T(n,k) of number of elements of Weyl group of type D of order 2^{n-1} n! such that a reduced word uses exactly n-k distinct simple reflections 0 <= k <= n, n>=1.

n	a(n)
0	0
1	0
2	1
3	1
4	2
5	1
6	13
7	7
8	3
9	1
10	135
11	40
12	12
13	4
14	1
15	1537
16	293
17	66
18	18
19	5
20	1
21	19811
22	2646
23	451
24	100
25	25
26	6
27	1
28	289073
29	28887
30	3753
31	663
32	143
33	33
34	7
35	1
36	4741923
37	374820
38	37798
39	5232
40	940
41	196
42	42
43	8
44	1
45	86705417
46	5676121
47	457508
48	49444
49	7174
50	1294
51	260
52	52
53	9
54	1

[0, 0, 1, 1, 2, 1, 13, 7, 3, 1, 135, 40, 12, 4, 1, 1537, 293, 66, 18, 5, 1, 19811, 2646, 451, 100, 25, 6, 1, 289073, 28887, 3753, 663, 143, 33, 7, 1, 4741923, 374820, 37798, 5232, 940, 196, 42, 8, 1, 86705417, 5676121, 457508, 49444, 7174, 1294, 260, 52, 9, 1]

cp's OEIS Frontend

A112226 Table T(n,k) of number of elements of Weyl group of type D of order 2^{n-1} n! such that a reduced word uses exactly n-k distinct simple reflections 0 <= k <= n, n>=1.

Table of values

List of values