A052283 - cp's OEIS frontend

A052283 Triangle read by rows: T(n,k) is the number of unlabeled directed graphs on n nodes with k arcs, k=0..n*(n-1).

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	4
8	4
9	4
10	1
11	1
12	1
13	1
14	5
15	13
16	27
17	38
18	48
19	38
20	27
21	13
22	5
23	1
24	1
25	1
26	1
27	5
28	16
29	61
30	154
31	379
32	707
33	1155
34	1490
35	1670
36	1490
37	1155
38	707
39	379
40	154
41	61
42	16
43	5
44	1
45	1
46	1
47	1
48	5
49	17
50	76
51	288
52	1043
53	3242
54	8951
55	21209
56	43863
57	78814
58	124115
59	171024
60	207362
61	220922
62	207362
63	171024
64	124115
65	78814
66	43863
67	21209
68	8951
69	3242
70	1043
71	288
72	76
73	17
74	5
75	1
76	1

[1, 1, 1, 1, 1, 1, 1, 4, 4, 4, 1, 1, 1, 1, 5, 13, 27, 38, 48, 38, 27, 13, 5, 1, 1, 1, 1, 5, 16, 61, 154, 379, 707, 1155, 1490, 1670, 1490, 1155, 707, 379, 154, 61, 16, 5, 1, 1, 1, 1, 5, 17, 76, 288, 1043, 3242, 8951, 21209, 43863, 78814, 124115, 171024, 207362, 220922, 207362, 171024, 124115, 78814, 43863, 21209, 8951, 3242, 1043, 288, 76, 17, 5, 1, 1]

cp's OEIS Frontend

A052283 Triangle read by rows: T(n,k) is the number of unlabeled directed graphs on n nodes with k arcs, k=0..n*(n-1).

Table of values

List of values