A320750 - cp's OEIS frontend

A320750 Array read by antidiagonals: T(n,k) is the number of color patterns (set partitions) in an unoriented row of length n using k or fewer colors (subsets).

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	2
9	3
10	1
11	1
12	2
13	4
14	6
15	1
16	1
17	2
18	4
19	10
20	10
21	1
22	1
23	2
24	4
25	11
26	25
27	20
28	1
29	1
30	2
31	4
32	11
33	31
34	70
35	36
36	1
37	1
38	2
39	4
40	11
41	32
42	107
43	196
44	72
45	1
46	1
47	2
48	4
49	11
50	32
51	116
52	379
53	574
54	136
55	1
56	1
57	2
58	4
59	11
60	32
61	117
62	455
63	1451
64	1681
65	272
66	1

[1, 1, 1, 1, 2, 1, 1, 2, 3, 1, 1, 2, 4, 6, 1, 1, 2, 4, 10, 10, 1, 1, 2, 4, 11, 25, 20, 1, 1, 2, 4, 11, 31, 70, 36, 1, 1, 2, 4, 11, 32, 107, 196, 72, 1, 1, 2, 4, 11, 32, 116, 379, 574, 136, 1, 1, 2, 4, 11, 32, 117, 455, 1451, 1681, 272, 1]

cp's OEIS Frontend

A320750 Array read by antidiagonals: T(n,k) is the number of color patterns (set partitions) in an unoriented row of length n using k or fewer colors (subsets).

Table of values

List of values