A285616 - cp's OEIS frontend

A285616 Triangle read by rows: T(n,k) is the number of hypergraphs on n labeled vertices with exactly k connected components, n>=1, 1<=k<=n.

n	a(n)
1	2
2	4
3	4
4	96
5	24
6	8
7	31840
8	816
9	96
10	16
11	2147156736
12	322240
13	4320
14	320
15	32
16	9223372011084915712
17	25767883392
18	1957440
19	18240
20	960
21	64
22	170141183460469231602560095199828453376
23	129127208335656968192
24	180389362944
25	9251200
26	67200
27	2688
28	128

[2, 4, 4, 96, 24, 8, 31840, 816, 96, 16, 2147156736, 322240, 4320, 320, 32, 9223372011084915712, 25767883392, 1957440, 18240, 960, 64, 170141183460469231602560095199828453376, 129127208335656968192, 180389362944, 9251200, 67200, 2688, 128]

cp's OEIS Frontend

A285616 Triangle read by rows: T(n,k) is the number of hypergraphs on n labeled vertices with exactly k connected components, n>=1, 1<=k<=n.

Table of values

List of values