A350488 - cp's OEIS frontend

A350488 Triangle read by rows: T(n,k) is the number of acyclic digraphs on n unlabeled nodes with k arcs and a global source, n >= 1, k = 0..n*(n-1)/2.

n	a(n)
1	1
2	0
3	1
4	0
5	0
6	2
7	1
8	0
9	0
10	0
11	4
12	6
13	5
14	1
15	0
16	0
17	0
18	0
19	9
20	25
21	47
22	46
23	27
24	9
25	1
26	0
27	0
28	0
29	0
30	0
31	20
32	95
33	297
34	582
35	783
36	738
37	501
38	235
39	75
40	14
41	1
42	0
43	0
44	0
45	0
46	0
47	0
48	48
49	337
50	1575
51	4941
52	11295
53	19404
54	25847
55	26966
56	22195
57	14380
58	7280
59	2831
60	816
61	165
62	20
63	1

[1, 0, 1, 0, 0, 2, 1, 0, 0, 0, 4, 6, 5, 1, 0, 0, 0, 0, 9, 25, 47, 46, 27, 9, 1, 0, 0, 0, 0, 0, 20, 95, 297, 582, 783, 738, 501, 235, 75, 14, 1, 0, 0, 0, 0, 0, 0, 48, 337, 1575, 4941, 11295, 19404, 25847, 26966, 22195, 14380, 7280, 2831, 816, 165, 20, 1]

cp's OEIS Frontend

A350488 Triangle read by rows: T(n,k) is the number of acyclic digraphs on n unlabeled nodes with k arcs and a global source, n >= 1, k = 0..n*(n-1)/2.

Table of values

List of values