A057276 - cp's OEIS frontend

A057276 Triangle T(n,k) of number of strongly connected digraphs on n unlabeled nodes and with k arcs, k=0..n*(n-1).

n	a(n)
1	1
2	0
3	0
4	1
5	0
6	0
7	0
8	1
9	2
10	1
11	1
12	0
13	0
14	0
15	0
16	1
17	4
18	16
19	22
20	22
21	11
22	5
23	1
24	1
25	0
26	0
27	0
28	0
29	0
30	1
31	7
32	58
33	240
34	565
35	928
36	1065
37	953
38	640
39	359
40	150
41	59
42	16
43	5
44	1
45	1
46	0
47	0
48	0
49	0
50	0
51	0
52	1
53	10
54	165
55	1281
56	6063
57	19591
58	47049
59	87690
60	131927
61	163632
62	170720
63	151238
64	115122
65	75357
66	42745
67	20891
68	8877
69	3224
70	1039
71	286
72	76
73	17
74	5
75	1
76	1

[1, 0, 0, 1, 0, 0, 0, 1, 2, 1, 1, 0, 0, 0, 0, 1, 4, 16, 22, 22, 11, 5, 1, 1, 0, 0, 0, 0, 0, 1, 7, 58, 240, 565, 928, 1065, 953, 640, 359, 150, 59, 16, 5, 1, 1, 0, 0, 0, 0, 0, 0, 1, 10, 165, 1281, 6063, 19591, 47049, 87690, 131927, 163632, 170720, 151238, 115122, 75357, 42745, 20891, 8877, 3224, 1039, 286, 76, 17, 5, 1, 1]

cp's OEIS Frontend

A057276 Triangle T(n,k) of number of strongly connected digraphs on n unlabeled nodes and with k arcs, k=0..n*(n-1).

Table of values

List of values