A291203 - cp's OEIS frontend

A291203 Number F(n,h,t) of forests of t labeled rooted trees with n vertices such that h is the maximum of 0 and the tree heights; triangle of triangles F(n,h,t), n>=0, h=0..n, t=0..n-h, read by layers, then by rows.

n	a(n)
0	1
1	0
2	1
3	0
4	0
5	0
6	1
7	0
8	2
9	0
10	0
11	0
12	0
13	1
14	0
15	3
16	6
17	0
18	6
19	0
20	0
21	0
22	0
23	0
24	1
25	0
26	4
27	24
28	12
29	0
30	36
31	24
32	0
33	24
34	0
35	0
36	0
37	0
38	0
39	0
40	1
41	0
42	5
43	80
44	90
45	20
46	0
47	200
48	300
49	60
50	0
51	300
52	120
53	0
54	120
55	0
56	0
57	0
58	0
59	0
60	0
61	0
62	1
63	0
64	6
65	240
66	540
67	240
68	30
69	0
70	1170
71	3000
72	1260
73	120
74	0
75	3360
76	2520
77	360
78	0
79	2520
80	720
81	0
82	720
83	0

[1, 0, 1, 0, 0, 0, 1, 0, 2, 0, 0, 0, 0, 1, 0, 3, 6, 0, 6, 0, 0, 0, 0, 0, 1, 0, 4, 24, 12, 0, 36, 24, 0, 24, 0, 0, 0, 0, 0, 0, 1, 0, 5, 80, 90, 20, 0, 200, 300, 60, 0, 300, 120, 0, 120, 0, 0, 0, 0, 0, 0, 0, 1, 0, 6, 240, 540, 240, 30, 0, 1170, 3000, 1260, 120, 0, 3360, 2520, 360, 0, 2520, 720, 0, 720, 0]

cp's OEIS Frontend

A291203 Number F(n,h,t) of forests of t labeled rooted trees with n vertices such that h is the maximum of 0 and the tree heights; triangle of triangles F(n,h,t), n>=0, h=0..n, t=0..n-h, read by layers, then by rows.

Table of values

List of values