A322139 - cp's OEIS frontend

A322139 Number of labeled 2-connected simple graphs with n edges (the vertices are {1,2,...,k} for some k).

n	a(n)
0	1
1	1
2	0
3	1
4	3
5	18
6	131
7	1180
8	12570
9	154535
10	2151439
11	33431046
12	573197723
13	10743619285
14	218447494812
15	4787255999220
16	112454930390211
17	2818138438707516
18	75031660452368001
19	2114705500316025737
20	62890323682634277951
21	1967901134191778583146
22	64623905086814216468839

[1, 1, 0, 1, 3, 18, 131, 1180, 12570, 154535, 2151439, 33431046, 573197723, 10743619285, 218447494812, 4787255999220, 112454930390211, 2818138438707516, 75031660452368001, 2114705500316025737, 62890323682634277951, 1967901134191778583146, 64623905086814216468839]

cp's OEIS Frontend

A322139 Number of labeled 2-connected simple graphs with n edges (the vertices are {1,2,...,k} for some k).

Table of values

List of values