A181996 - cp's OEIS frontend

A181996 Triangle of Ward numbers T(n,k) (n>=0, k=0 if n=0, otherwise 0 <= k <= n-1) read by rows.

n	a(n)
0	1
1	1
2	3
3	1
4	15
5	10
6	1
7	105
8	105
9	25
10	1
11	945
12	1260
13	490
14	56
15	1
16	10395
17	17325
18	9450
19	1918
20	119
21	1
22	135135
23	270270
24	190575
25	56980
26	6825
27	246
28	1
29	2027025
30	4729725
31	4099095
32	1636635
33	302995
34	22935
35	501
36	1
37	34459425
38	91891800
39	94594500
40	47507460
41	12122110
42	1487200
43	74316
44	1012
45	1

[1, 1, 3, 1, 15, 10, 1, 105, 105, 25, 1, 945, 1260, 490, 56, 1, 10395, 17325, 9450, 1918, 119, 1, 135135, 270270, 190575, 56980, 6825, 246, 1, 2027025, 4729725, 4099095, 1636635, 302995, 22935, 501, 1, 34459425, 91891800, 94594500, 47507460, 12122110, 1487200, 74316, 1012, 1]

cp's OEIS Frontend

A181996 Triangle of Ward numbers T(n,k) (n>=0, k=0 if n=0, otherwise 0 <= k <= n-1) read by rows.

Table of values

List of values