A111246 - cp's OEIS frontend

A111246 Triangle read by rows: a(n,k) = number of partitions of an n-set into exactly k nonempty subsets, each of size <= 3.

n	a(n)
1	1
2	1
3	1
4	1
5	3
6	1
7	0
8	7
9	6
10	1
11	0
12	10
13	25
14	10
15	1
16	0
17	10
18	75
19	65
20	15
21	1
22	0
23	0
24	175
25	315
26	140
27	21
28	1
29	0
30	0
31	280
32	1225
33	980
34	266
35	28
36	1
37	0
38	0
39	280
40	3780
41	5565
42	2520
43	462
44	36
45	1
46	0
47	0
48	0
49	9100
50	26145
51	19425
52	5670
53	750
54	45
55	1
56	0
57	0
58	0
59	15400
60	102025
61	125895
62	56595
63	11550
64	1155

[1, 1, 1, 1, 3, 1, 0, 7, 6, 1, 0, 10, 25, 10, 1, 0, 10, 75, 65, 15, 1, 0, 0, 175, 315, 140, 21, 1, 0, 0, 280, 1225, 980, 266, 28, 1, 0, 0, 280, 3780, 5565, 2520, 462, 36, 1, 0, 0, 0, 9100, 26145, 19425, 5670, 750, 45, 1, 0, 0, 0, 15400, 102025, 125895, 56595, 11550, 1155]

cp's OEIS Frontend

A111246 Triangle read by rows: a(n,k) = number of partitions of an n-set into exactly k nonempty subsets, each of size <= 3.

Table of values

List of values