A350732 - cp's OEIS frontend

A350732 Triangle read by rows: T(n,k) is the number of weakly connected oriented graphs on n labeled nodes with k arcs, n >= 0, k=0..n*(n-1)/2.

n	a(n)
1	1
2	0
3	2
4	0
5	0
6	12
7	8
8	0
9	0
10	0
11	128
12	240
13	192
14	64
15	0
16	0
17	0
18	0
19	2000
20	7104
21	13120
22	15360
23	11520
24	5120
25	1024
26	0
27	0
28	0
29	0
30	0
31	41472
32	234240
33	729600
34	1578240
35	2531840
36	3068928
37	2795520
38	1863680
39	860160
40	245760
41	32768

[1, 0, 2, 0, 0, 12, 8, 0, 0, 0, 128, 240, 192, 64, 0, 0, 0, 0, 2000, 7104, 13120, 15360, 11520, 5120, 1024, 0, 0, 0, 0, 0, 41472, 234240, 729600, 1578240, 2531840, 3068928, 2795520, 1863680, 860160, 245760, 32768]

cp's OEIS Frontend

A350732 Triangle read by rows: T(n,k) is the number of weakly connected oriented graphs on n labeled nodes with k arcs, n >= 0, k=0..n*(n-1)/2.

Table of values

List of values