A143911 - cp's OEIS frontend

A143911 Triangle read by rows: T(n,k) = number of forests on n labeled nodes, where k is the maximum of the number of edges per tree (n>=1, 0<=k<=n-1).

n	a(n)
1	1
2	1
3	1
4	1
5	3
6	3
7	1
8	9
9	12
10	16
11	1
12	25
13	60
14	80
15	125
16	1
17	75
18	330
19	480
20	750
21	1296
22	1
23	231
24	1680
25	3920
26	5250
27	9072
28	16807
29	1
30	763
31	9408
32	33600
33	49000
34	72576
35	134456
36	262144
37	1
38	2619
39	56952
40	254016
41	598500
42	762048
43	1210104
44	2359296
45	4782969
46	1
47	9495
48	348120

[1, 1, 1, 1, 3, 3, 1, 9, 12, 16, 1, 25, 60, 80, 125, 1, 75, 330, 480, 750, 1296, 1, 231, 1680, 3920, 5250, 9072, 16807, 1, 763, 9408, 33600, 49000, 72576, 134456, 262144, 1, 2619, 56952, 254016, 598500, 762048, 1210104, 2359296, 4782969, 1, 9495, 348120]

cp's OEIS Frontend

A143911 Triangle read by rows: T(n,k) = number of forests on n labeled nodes, where k is the maximum of the number of edges per tree (n>=1, 0<=k<=n-1).

Table of values

List of values