A350789 - cp's OEIS frontend

A350789 Triangle read by rows: T(n,k) is the number of unlabeled weakly connected digraphs with n arcs and k vertices, k = 1..n+1.

n	a(n)
0	1
1	0
2	1
3	0
4	1
5	3
6	0
7	0
8	4
9	8
10	0
11	0
12	4
13	22
14	27
15	0
16	0
17	1
18	37
19	108
20	91
21	0
22	0
23	1
24	47
25	326
26	582
27	350
28	0
29	0
30	0
31	38
32	667
33	2432
34	3024
35	1376
36	0
37	0
38	0
39	27
40	1127
41	7694
42	17314
43	16008
44	5743
45	0
46	0
47	0
48	13
49	1477
50	19646
51	74676
52	117312
53	84494
54	24635

[1, 0, 1, 0, 1, 3, 0, 0, 4, 8, 0, 0, 4, 22, 27, 0, 0, 1, 37, 108, 91, 0, 0, 1, 47, 326, 582, 350, 0, 0, 0, 38, 667, 2432, 3024, 1376, 0, 0, 0, 27, 1127, 7694, 17314, 16008, 5743, 0, 0, 0, 13, 1477, 19646, 74676, 117312, 84494, 24635]

cp's OEIS Frontend

A350789 Triangle read by rows: T(n,k) is the number of unlabeled weakly connected digraphs with n arcs and k vertices, k = 1..n+1.

Table of values

List of values