A350731 - cp's OEIS frontend

A350731 Triangle read by rows: T(n,k) is the number of strongly connected oriented graphs on n labeled nodes with k arcs, n >= 1, k=0..n*(n-1)/2.

n	a(n)
1	1
2	0
3	0
4	0
5	0
6	0
7	2
8	0
9	0
10	0
11	0
12	6
13	36
14	24
15	0
16	0
17	0
18	0
19	0
20	24
21	480
22	1940
23	2970
24	2040
25	544
26	0
27	0
28	0
29	0
30	0
31	0
32	120
33	5040
34	51330
35	221910
36	527940
37	772080
38	722250
39	426420
40	146160
41	22320
42	0
43	0
44	0
45	0
46	0
47	0
48	0
49	720
50	52920
51	1026060
52	8810970
53	43268442
54	138984510

[1, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 6, 36, 24, 0, 0, 0, 0, 0, 24, 480, 1940, 2970, 2040, 544, 0, 0, 0, 0, 0, 0, 120, 5040, 51330, 221910, 527940, 772080, 722250, 426420, 146160, 22320, 0, 0, 0, 0, 0, 0, 0, 720, 52920, 1026060, 8810970, 43268442, 138984510]

cp's OEIS Frontend

A350731 Triangle read by rows: T(n,k) is the number of strongly connected oriented graphs on n labeled nodes with k arcs, n >= 1, k=0..n*(n-1)/2.

Table of values

List of values