A350734 - cp's OEIS frontend

A350734 Triangle read by rows: T(n,k) is the number of weakly connected oriented graphs on n unlabeled nodes with k arcs, n >= 1, k = 0..n*(n-1)/2.

n	a(n)
1	1
2	0
3	1
4	0
5	0
6	3
7	2
8	0
9	0
10	0
11	8
12	12
13	10
14	4
15	0
16	0
17	0
18	0
19	27
20	68
21	127
22	144
23	107
24	50
25	12
26	0
27	0
28	0
29	0
30	0
31	91
32	395
33	1144
34	2393
35	3767
36	4500
37	4112
38	2740
39	1274
40	376
41	56
42	0
43	0
44	0
45	0
46	0
47	0
48	350
49	2170
50	9139
51	28606
52	71583
53	145600
54	244589
55	339090
56	387458
57	361394
58	271177
59	159872
60	71320
61	22690
62	4604
63	456

[1, 0, 1, 0, 0, 3, 2, 0, 0, 0, 8, 12, 10, 4, 0, 0, 0, 0, 27, 68, 127, 144, 107, 50, 12, 0, 0, 0, 0, 0, 91, 395, 1144, 2393, 3767, 4500, 4112, 2740, 1274, 376, 56, 0, 0, 0, 0, 0, 0, 350, 2170, 9139, 28606, 71583, 145600, 244589, 339090, 387458, 361394, 271177, 159872, 71320, 22690, 4604, 456]

cp's OEIS Frontend

A350734 Triangle read by rows: T(n,k) is the number of weakly connected oriented graphs on n unlabeled nodes with k arcs, n >= 1, k = 0..n*(n-1)/2.

Table of values

List of values