A215771 - cp's OEIS frontend

A215771 Number T(n,k) of undirected labeled graphs on n nodes with exactly k cycle graphs as connected components; triangle T(n,k), n>=0, 0<=k<=n, read by rows.

n	a(n)
0	1
1	0
2	1
3	0
4	1
5	1
6	0
7	1
8	3
9	1
10	0
11	3
12	7
13	6
14	1
15	0
16	12
17	25
18	25
19	10
20	1
21	0
22	60
23	127
24	120
25	65
26	15
27	1
28	0
29	360
30	777
31	742
32	420
33	140
34	21
35	1
36	0
37	2520
38	5547
39	5446
40	3157
41	1190
42	266
43	28
44	1
45	0
46	20160
47	45216
48	45559
49	27342
50	10857
51	2898
52	462
53	36
54	1
55	0
56	181440
57	414144
58	427275
59	264925
60	109935
61	31899
62	6300
63	750
64	45
65	1

[1, 0, 1, 0, 1, 1, 0, 1, 3, 1, 0, 3, 7, 6, 1, 0, 12, 25, 25, 10, 1, 0, 60, 127, 120, 65, 15, 1, 0, 360, 777, 742, 420, 140, 21, 1, 0, 2520, 5547, 5446, 3157, 1190, 266, 28, 1, 0, 20160, 45216, 45559, 27342, 10857, 2898, 462, 36, 1, 0, 181440, 414144, 427275, 264925, 109935, 31899, 6300, 750, 45, 1]

cp's OEIS Frontend

A215771 Number T(n,k) of undirected labeled graphs on n nodes with exactly k cycle graphs as connected components; triangle T(n,k), n>=0, 0<=k<=n, read by rows.

Table of values

List of values