A143398 - cp's OEIS frontend

A143398 Triangle T(n,k) = number of forests of labeled rooted trees of height at most 1, with n labels, where each root contains k labels, n>=0, 0<=k<=n.

n	a(n)
0	1
1	0
2	1
3	0
4	3
5	1
6	0
7	10
8	3
9	1
10	0
11	41
12	9
13	4
14	1
15	0
16	196
17	40
18	10
19	5
20	1
21	0
22	1057
23	210
24	30
25	15
26	6
27	1
28	0
29	6322
30	1176
31	175
32	35
33	21
34	7
35	1
36	0
37	41393
38	7273
39	1176
40	105
41	56
42	28
43	8
44	1
45	0
46	293608
47	49932
48	7084
49	756
50	126
51	84
52	36
53	9
54	1
55	0
56	2237921
57	372060
58	42120
59	6510
60	378
61	210
62	120
63	45
64	10
65	1

[1, 0, 1, 0, 3, 1, 0, 10, 3, 1, 0, 41, 9, 4, 1, 0, 196, 40, 10, 5, 1, 0, 1057, 210, 30, 15, 6, 1, 0, 6322, 1176, 175, 35, 21, 7, 1, 0, 41393, 7273, 1176, 105, 56, 28, 8, 1, 0, 293608, 49932, 7084, 756, 126, 84, 36, 9, 1, 0, 2237921, 372060, 42120, 6510, 378, 210, 120, 45, 10, 1]

cp's OEIS Frontend

A143398 Triangle T(n,k) = number of forests of labeled rooted trees of height at most 1, with n labels, where each root contains k labels, n>=0, 0<=k<=n.

Table of values

List of values