A143543 - cp's OEIS frontend

A143543 Triangle read by rows: T(n,k) = number of labeled graphs on n nodes with k connected components, 1<=k<=n.

n	a(n)
1	1
2	1
3	1
4	4
5	3
6	1
7	38
8	19
9	6
10	1
11	728
12	230
13	55
14	10
15	1
16	26704
17	5098
18	825
19	125
20	15
21	1
22	1866256
23	207536
24	20818
25	2275
26	245
27	21
28	1
29	251548592
30	15891372
31	925036
32	64673
33	5320
34	434
35	28
36	1
37	66296291072
38	2343580752
39	76321756
40	3102204
41	169113
42	11088
43	714
44	36
45	1

[1, 1, 1, 4, 3, 1, 38, 19, 6, 1, 728, 230, 55, 10, 1, 26704, 5098, 825, 125, 15, 1, 1866256, 207536, 20818, 2275, 245, 21, 1, 251548592, 15891372, 925036, 64673, 5320, 434, 28, 1, 66296291072, 2343580752, 76321756, 3102204, 169113, 11088, 714, 36, 1]

cp's OEIS Frontend

A143543 Triangle read by rows: T(n,k) = number of labeled graphs on n nodes with k connected components, 1<=k<=n.

Table of values

List of values