A109281 - cp's OEIS frontend

A109281 Triangle T(n,k) of elements of n-th Weyl group of type B whose reduced word uses n-k generators.

n	a(n)
0	1
1	1
2	1
3	5
4	2
5	1
6	35
7	9
8	3
9	1
10	309
11	56
12	14
13	4
14	1
15	3287
16	443
17	84
18	20
19	5
20	1
21	41005
22	4298
23	623
24	120
25	27
26	6
27	1
28	588487
29	49937
30	5629
31	859
32	165
33	35
34	7
35	1
36	9571125
37	680700
38	61300
39	7360
40	1162
41	220
42	44
43	8
44	1
45	174230863
46	10683103
47	793402
48	75714
49	9584
50	1544
51	286
52	54
53	9
54	1

[1, 1, 1, 5, 2, 1, 35, 9, 3, 1, 309, 56, 14, 4, 1, 3287, 443, 84, 20, 5, 1, 41005, 4298, 623, 120, 27, 6, 1, 588487, 49937, 5629, 859, 165, 35, 7, 1, 9571125, 680700, 61300, 7360, 1162, 220, 44, 8, 1, 174230863, 10683103, 793402, 75714, 9584, 1544, 286, 54, 9, 1]

cp's OEIS Frontend

A109281 Triangle T(n,k) of elements of n-th Weyl group of type B whose reduced word uses n-k generators.

Table of values

List of values