A105786 - cp's OEIS frontend

A105786 Triangle of the numbers of different forests of m unrooted trees of smallest order 2, i.e., without isolated vertices, on N labeled nodes.

n	a(n)
1	0
2	1
3	0
4	3
5	0
6	0
7	16
8	3
9	0
10	0
11	125
12	30
13	0
14	0
15	0
16	1296
17	330
18	15
19	0
20	0
21	0
22	16807
23	4305
24	315
25	0
26	0
27	0
28	0
29	262144
30	66248
31	5880
32	105
33	0
34	0
35	0
36	0
37	4782969
38	1183644
39	115290
40	3780
41	0
42	0
43	0
44	0
45	0
46	100000000
47	24170310
48	2467080
49	107100
50	945
51	0
52	0
53	0
54	0
55	0
56	2357947691
57	556409535

[0, 1, 0, 3, 0, 0, 16, 3, 0, 0, 125, 30, 0, 0, 0, 1296, 330, 15, 0, 0, 0, 16807, 4305, 315, 0, 0, 0, 0, 262144, 66248, 5880, 105, 0, 0, 0, 0, 4782969, 1183644, 115290, 3780, 0, 0, 0, 0, 0, 100000000, 24170310, 2467080, 107100, 945, 0, 0, 0, 0, 0, 2357947691, 556409535]

cp's OEIS Frontend

A105786 Triangle of the numbers of different forests of m unrooted trees of smallest order 2, i.e., without isolated vertices, on N labeled nodes.

Table of values

List of values