A350749 - cp's OEIS frontend

A350749 Triangle read by rows: T(n,k) is the number of oriented graphs on n labeled nodes with k arcs, n >= 0, k = 0..n*(n-1)/2.

n	a(n)
0	1
1	1
2	1
3	2
4	1
5	6
6	12
7	8
8	1
9	12
10	60
11	160
12	240
13	192
14	64
15	1
16	20
17	180
18	960
19	3360
20	8064
21	13440
22	15360
23	11520
24	5120
25	1024
26	1
27	30
28	420
29	3640
30	21840
31	96096
32	320320
33	823680
34	1647360
35	2562560
36	3075072
37	2795520
38	1863680
39	860160
40	245760
41	32768

[1, 1, 1, 2, 1, 6, 12, 8, 1, 12, 60, 160, 240, 192, 64, 1, 20, 180, 960, 3360, 8064, 13440, 15360, 11520, 5120, 1024, 1, 30, 420, 3640, 21840, 96096, 320320, 823680, 1647360, 2562560, 3075072, 2795520, 1863680, 860160, 245760, 32768]

cp's OEIS Frontend

A350749 Triangle read by rows: T(n,k) is the number of oriented graphs on n labeled nodes with k arcs, n >= 0, k = 0..n*(n-1)/2.

Table of values

List of values