A181386 - cp's OEIS frontend

A181386 Tetrahedron of terms C(r,n,m) representing the number of ways of choosing m disjoint subsets of r members from an original set of n members.

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	2
7	1
8	1
9	1
10	1
11	3
12	3
13	1
14	1
15	1
16	1
17	1
18	1
19	4
20	6
21	4
22	1
23	1
24	3
25	1
26	1
27	1
28	1
29	5
30	10
31	10
32	5
33	1
34	1
35	6
36	3
37	1
38	1
39	1
40	1
41	1
42	1
43	6
44	15
45	20
46	15
47	6
48	1
49	1
50	10
51	15
52	1
53	4
54	1
55	1
56	1
57	1
58	1
59	7
60	21
61	35
62	35
63	21
64	7
65	1
66	1
67	15
68	45
69	15
70	1
71	10
72	1
73	1
74	1
75	1
76	1
77	1
78	1
79	8
80	28
81	56
82	70
83	56
84	28
85	8
86	1
87	1
88	21
89	105
90	105
91	1
92	20

[1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 3, 3, 1, 1, 1, 1, 1, 1, 4, 6, 4, 1, 1, 3, 1, 1, 1, 1, 5, 10, 10, 5, 1, 1, 6, 3, 1, 1, 1, 1, 1, 1, 6, 15, 20, 15, 6, 1, 1, 10, 15, 1, 4, 1, 1, 1, 1, 1, 7, 21, 35, 35, 21, 7, 1, 1, 15, 45, 15, 1, 10, 1, 1, 1, 1, 1, 1, 1, 8, 28, 56, 70, 56, 28, 8, 1, 1, 21, 105, 105, 1, 20]

cp's OEIS Frontend

A181386 Tetrahedron of terms C(r,n,m) representing the number of ways of choosing m disjoint subsets of r members from an original set of n members.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	2
7	1
8	1
9	1
10	1
11	3
12	3
13	1
14	1
15	1
16	1
17	1
18	1
19	4
20	6
21	4
22	1
23	1
24	3
25	1
26	1
27	1
28	1
29	5
30	10
31	10
32	5
33	1
34	1
35	6
36	3
37	1
38	1
39	1
40	1
41	1
42	1
43	6
44	15
45	20
46	15
47	6
48	1
49	1
50	10
51	15
52	1
53	4
54	1
55	1
56	1
57	1
58	1
59	7
60	21
61	35
62	35
63	21
64	7
65	1
66	1
67	15
68	45
69	15
70	1
71	10
72	1
73	1
74	1
75	1
76	1
77	1
78	1
79	8
80	28
81	56
82	70
83	56
84	28
85	8
86	1
87	1
88	21
89	105
90	105
91	1
92	20

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	2
7	1
8	1
9	1
10	1
11	3
12	3
13	1
14	1
15	1
16	1
17	1
18	1
19	4
20	6
21	4
22	1
23	1
24	3
25	1
26	1
27	1
28	1
29	5
30	10
31	10
32	5
33	1
34	1
35	6
36	3
37	1
38	1
39	1
40	1
41	1
42	1
43	6
44	15
45	20
46	15
47	6
48	1
49	1
50	10
51	15
52	1
53	4
54	1
55	1
56	1
57	1
58	1
59	7
60	21
61	35
62	35
63	21
64	7
65	1
66	1
67	15
68	45
69	15
70	1
71	10
72	1
73	1
74	1
75	1
76	1
77	1
78	1
79	8
80	28
81	56
82	70
83	56
84	28
85	8
86	1
87	1
88	21
89	105
90	105
91	1
92	20

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	2
7	1
8	1
9	1
10	1
11	3
12	3
13	1
14	1
15	1
16	1
17	1
18	1
19	4
20	6
21	4
22	1
23	1
24	3
25	1
26	1
27	1
28	1
29	5
30	10
31	10
32	5
33	1
34	1
35	6
36	3
37	1
38	1
39	1
40	1
41	1
42	1
43	6
44	15
45	20
46	15
47	6
48	1
49	1
50	10
51	15
52	1
53	4
54	1
55	1
56	1
57	1
58	1
59	7
60	21
61	35
62	35
63	21
64	7
65	1
66	1
67	15
68	45
69	15
70	1
71	10
72	1
73	1
74	1
75	1
76	1
77	1
78	1
79	8
80	28
81	56
82	70
83	56
84	28
85	8
86	1
87	1
88	21
89	105
90	105
91	1
92	20