A202178 - cp's OEIS frontend

A202178 Triangle read by rows: T(n,k) = number of n-element unlabeled connected N-free posets of height k (1 <= k <= n).

n	a(n)
1	1
2	0
3	1
4	0
5	2
6	1
7	0
8	3
9	5
10	1
11	0
12	4
13	17
14	9
15	1
16	0
17	5
18	45
19	50
20	14
21	1
22	0
23	6
24	115
25	218
26	114
27	20
28	1
29	0
30	7
31	278
32	851
33	709
34	224
35	27
36	1
37	0
38	8
39	679
40	3161
41	3818
42	1867
43	398
44	35
45	1
46	0
47	9
48	1666
49	11507
50	19042
51	13113
52	4276
53	657
54	44
55	1
56	0
57	10
58	4167
59	41837
60	91383
61	83222
62	37898
63	8845
64	1025
65	54
66	1

[1, 0, 1, 0, 2, 1, 0, 3, 5, 1, 0, 4, 17, 9, 1, 0, 5, 45, 50, 14, 1, 0, 6, 115, 218, 114, 20, 1, 0, 7, 278, 851, 709, 224, 27, 1, 0, 8, 679, 3161, 3818, 1867, 398, 35, 1, 0, 9, 1666, 11507, 19042, 13113, 4276, 657, 44, 1, 0, 10, 4167, 41837, 91383, 83222, 37898, 8845, 1025, 54, 1]

cp's OEIS Frontend

A202178 Triangle read by rows: T(n,k) = number of n-element unlabeled connected N-free posets of height k (1 <= k <= n).

Table of values

List of values