A342590 - cp's OEIS frontend

A342590 T(n,k) is the number of connected posets of n unlabeled elements with k covering relations (n>=1, k>=0). Triangle read by rows.

n	a(n)
1	1
2	0
3	1
4	0
5	0
6	3
7	0
8	0
9	0
10	8
11	2
12	0
13	0
14	0
15	0
16	27
17	12
18	5
19	0
20	0
21	0
22	0
23	0
24	91
25	87
26	45
27	12
28	3
29	0
30	0
31	0
32	0
33	0
34	0
35	350
36	532
37	475
38	201
39	71
40	14
41	7
42	0
43	0
44	0
45	0
46	0
47	0
48	0
49	1376
50	3272
51	4298
52	3197
53	1565
54	554
55	186
56	44
57	16
58	4
59	0
60	0
61	0
62	0
63	0
64	0
65	0
66	0
67	5743
68	19396
69	36664
70	41706
71	31931
72	16972

[1, 0, 1, 0, 0, 3, 0, 0, 0, 8, 2, 0, 0, 0, 0, 27, 12, 5, 0, 0, 0, 0, 0, 91, 87, 45, 12, 3, 0, 0, 0, 0, 0, 0, 350, 532, 475, 201, 71, 14, 7, 0, 0, 0, 0, 0, 0, 0, 1376, 3272, 4298, 3197, 1565, 554, 186, 44, 16, 4, 0, 0, 0, 0, 0, 0, 0, 0, 5743, 19396, 36664, 41706, 31931, 16972]

cp's OEIS Frontend

A342590 T(n,k) is the number of connected posets of n unlabeled elements with k covering relations (n>=1, k>=0). Triangle read by rows.

Table of values

List of values