A329655 - cp's OEIS frontend

A329655 Square array read by antidiagonals: T(n,k) is the number of relations between set A with n elements and set B with k elements that are both right unique and left unique.

n	a(n)
1	1
2	2
3	2
4	3
5	6
6	3
7	4
8	12
9	12
10	4
11	5
12	20
13	33
14	20
15	5
16	6
17	30
18	72
19	72
20	30
21	6
22	7
23	42
24	135
25	208
26	135
27	42
28	7
29	8
30	56
31	228
32	500
33	500
34	228
35	56
36	8
37	9
38	72
39	357
40	1044
41	1545
42	1044
43	357
44	72
45	9
46	10
47	90
48	528
49	1960
50	4050
51	4050
52	1960
53	528
54	90
55	10
56	11
57	110
58	747
59	3392
60	9275
61	13326
62	9275
63	3392
64	747
65	110
66	11

[1, 2, 2, 3, 6, 3, 4, 12, 12, 4, 5, 20, 33, 20, 5, 6, 30, 72, 72, 30, 6, 7, 42, 135, 208, 135, 42, 7, 8, 56, 228, 500, 500, 228, 56, 8, 9, 72, 357, 1044, 1545, 1044, 357, 72, 9, 10, 90, 528, 1960, 4050, 4050, 1960, 528, 90, 10, 11, 110, 747, 3392, 9275, 13326, 9275, 3392, 747, 110, 11]

cp's OEIS Frontend

A329655 Square array read by antidiagonals: T(n,k) is the number of relations between set A with n elements and set B with k elements that are both right unique and left unique.

Table of values

List of values