A124323 - cp's OEIS frontend

A124323 Triangle read by rows: T(n,k) is the number of partitions of an n-set having k singleton blocks (0<=k<=n).

n	a(n)
0	1
1	0
2	1
3	1
4	0
5	1
6	1
7	3
8	0
9	1
10	4
11	4
12	6
13	0
14	1
15	11
16	20
17	10
18	10
19	0
20	1
21	41
22	66
23	60
24	20
25	15
26	0
27	1
28	162
29	287
30	231
31	140
32	35
33	21
34	0
35	1
36	715
37	1296
38	1148
39	616
40	280
41	56
42	28
43	0
44	1
45	3425
46	6435
47	5832
48	3444
49	1386
50	504
51	84
52	36
53	0
54	1
55	17722
56	34250
57	32175
58	19440
59	8610
60	2772
61	840
62	120
63	45
64	0
65	1

[1, 0, 1, 1, 0, 1, 1, 3, 0, 1, 4, 4, 6, 0, 1, 11, 20, 10, 10, 0, 1, 41, 66, 60, 20, 15, 0, 1, 162, 287, 231, 140, 35, 21, 0, 1, 715, 1296, 1148, 616, 280, 56, 28, 0, 1, 3425, 6435, 5832, 3444, 1386, 504, 84, 36, 0, 1, 17722, 34250, 32175, 19440, 8610, 2772, 840, 120, 45, 0, 1]

cp's OEIS Frontend

A124323 Triangle read by rows: T(n,k) is the number of partitions of an n-set having k singleton blocks (0<=k<=n).

Table of values

List of values