A057273 - cp's OEIS frontend

A057273 Triangle T(n,k) of the number of strongly connected digraphs on n labeled 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	2
9	9
10	6
11	1
12	0
13	0
14	0
15	0
16	6
17	84
18	316
19	492
20	417
21	212
22	66
23	12
24	1
25	0
26	0
27	0
28	0
29	0
30	24
31	720
32	6440
33	26875
34	65280
35	105566
36	122580
37	106825
38	71700
39	37540
40	15344
41	4835
42	1140
43	190
44	20
45	1
46	0
47	0
48	0
49	0
50	0
51	0
52	120
53	6480
54	107850
55	868830
56	4188696
57	13715940

[1, 0, 0, 1, 0, 0, 0, 2, 9, 6, 1, 0, 0, 0, 0, 6, 84, 316, 492, 417, 212, 66, 12, 1, 0, 0, 0, 0, 0, 24, 720, 6440, 26875, 65280, 105566, 122580, 106825, 71700, 37540, 15344, 4835, 1140, 190, 20, 1, 0, 0, 0, 0, 0, 0, 120, 6480, 107850, 868830, 4188696, 13715940]

cp's OEIS Frontend

A057273 Triangle T(n,k) of the number of strongly connected digraphs on n labeled nodes and with k arcs, k=0..n*(n-1).

Table of values

List of values