A057277 - cp's OEIS frontend

A057277 Triangle T(n,k) of number of digraphs with a source on n unlabeled nodes with k arcs, k=0..n*(n-1).

n	a(n)
1	1
2	0
3	1
4	1
5	0
6	0
7	2
8	4
9	4
10	1
11	1
12	0
13	0
14	0
15	4
16	16
17	34
18	46
19	38
20	27
21	13
22	5
23	1
24	1
25	0
26	0
27	0
28	0
29	9
30	56
31	229
32	573
33	1058
34	1448
35	1653
36	1487
37	1153
38	707
39	379
40	154
41	61
42	16
43	5
44	1
45	1
46	0
47	0
48	0
49	0
50	0
51	20
52	198
53	1218
54	5089
55	15596
56	37302
57	72776
58	119531
59	168233
60	205923
61	220337
62	207147
63	170965
64	124099
65	78811
66	43861
67	21209
68	8951
69	3242
70	1043
71	288
72	76
73	17
74	5
75	1
76	1

[1, 0, 1, 1, 0, 0, 2, 4, 4, 1, 1, 0, 0, 0, 4, 16, 34, 46, 38, 27, 13, 5, 1, 1, 0, 0, 0, 0, 9, 56, 229, 573, 1058, 1448, 1653, 1487, 1153, 707, 379, 154, 61, 16, 5, 1, 1, 0, 0, 0, 0, 0, 20, 198, 1218, 5089, 15596, 37302, 72776, 119531, 168233, 205923, 220337, 207147, 170965, 124099, 78811, 43861, 21209, 8951, 3242, 1043, 288, 76, 17, 5, 1, 1]

cp's OEIS Frontend

A057277 Triangle T(n,k) of number of digraphs with a source on n unlabeled nodes with k arcs, k=0..n*(n-1).

Table of values

List of values