A210586 - cp's OEIS frontend

A210586 Triangle T(n,k) read by rows: T(n,k) is the number of rooted hypertrees on n labeled vertices with k hyperedges, n >= 2, k >= 1.

n	a(n)
2	2
3	3
4	9
5	4
6	48
7	64
8	5
9	175
10	750
11	625
12	6
13	540
14	5400
15	12960
16	7776
17	7
18	1519
19	30870
20	156065
21	252105
22	117649
23	8
24	4032
25	154112
26	1433600
27	4587520
28	5505024
29	2097152
30	9
31	10287
32	704214
33	11160261
34	62001450
35	141363306
36	133923132
37	43046721
38	10
39	25500
40	3025000
41	77700000
42	695100000
43	2646000000
44	4620000000
45	3600000000
46	1000000000

[2, 3, 9, 4, 48, 64, 5, 175, 750, 625, 6, 540, 5400, 12960, 7776, 7, 1519, 30870, 156065, 252105, 117649, 8, 4032, 154112, 1433600, 4587520, 5505024, 2097152, 9, 10287, 704214, 11160261, 62001450, 141363306, 133923132, 43046721, 10, 25500, 3025000, 77700000, 695100000, 2646000000, 4620000000, 3600000000, 1000000000]

cp's OEIS Frontend

A210586 Triangle T(n,k) read by rows: T(n,k) is the number of rooted hypertrees on n labeled vertices with k hyperedges, n >= 2, k >= 1.

Table of values

List of values