A227322 - cp's OEIS frontend

A227322 Triangle read by rows: T(n, m) for 0 <= m <= n is the number of bipartite connected labeled graphs with parts of size n and m.

n	a(n)
0	1
1	1
2	1
3	0
4	1
5	5
6	0
7	1
8	19
9	205
10	0
11	1
12	65
13	1795
14	36317
15	0
16	1
17	211
18	14221
19	636331
20	23679901
21	0
22	1
23	665
24	106819
25	10365005
26	805351531
27	56294206205
28	0
29	1
30	2059
31	778765
32	162470155
33	26175881341
34	3735873535339
35	502757743028605

[1, 1, 1, 0, 1, 5, 0, 1, 19, 205, 0, 1, 65, 1795, 36317, 0, 1, 211, 14221, 636331, 23679901, 0, 1, 665, 106819, 10365005, 805351531, 56294206205, 0, 1, 2059, 778765, 162470155, 26175881341, 3735873535339, 502757743028605]

cp's OEIS Frontend

A227322 Triangle read by rows: T(n, m) for 0 <= m <= n is the number of bipartite connected labeled graphs with parts of size n and m.

Table of values

List of values