A134954 - cp's OEIS frontend

A134954 Number of "hyperforests" on n labeled nodes, i.e., hypergraphs that have no cycles, assuming that each edge contains at least two vertices.

n	a(n)
0	1
1	1
2	2
3	8
4	55
5	562
6	7739
7	134808
8	2846764
9	70720278
10	2021462055
11	65365925308
12	2359387012261
13	94042995460130
14	4102781803365418
15	194459091322828280
16	9950303194613104995
17	546698973373090998382
18	32101070021048906407183
19	2006125858248695722280564

[1, 1, 2, 8, 55, 562, 7739, 134808, 2846764, 70720278, 2021462055, 65365925308, 2359387012261, 94042995460130, 4102781803365418, 194459091322828280, 9950303194613104995, 546698973373090998382, 32101070021048906407183, 2006125858248695722280564]

cp's OEIS Frontend

A134954 Number of "hyperforests" on n labeled nodes, i.e., hypergraphs that have no cycles, assuming that each edge contains at least two vertices.

Table of values

List of values