A350793 - cp's OEIS frontend

A350793 Triangle read by rows: T(n,k) is the number of digraphs on n labeled nodes with k arcs and a global source (or sink), n >= 1, k = 0..(n-1)^2.

n	a(n)
1	1
2	0
3	2
4	0
5	0
6	9
7	12
8	3
9	0
10	0
11	0
12	64
13	252
14	396
15	320
16	144
17	36
18	4
19	0
20	0
21	0
22	0
23	625
24	4860
25	17060
26	35900
27	50775
28	51300
29	38340
30	21540
31	9075
32	2800
33	600
34	80
35	5
36	0
37	0
38	0
39	0
40	0
41	7776
42	99720
43	603720
44	2300310
45	6206730
46	12654384
47	20310840
48	26385240
49	28273620
50	25302960

[1, 0, 2, 0, 0, 9, 12, 3, 0, 0, 0, 64, 252, 396, 320, 144, 36, 4, 0, 0, 0, 0, 625, 4860, 17060, 35900, 50775, 51300, 38340, 21540, 9075, 2800, 600, 80, 5, 0, 0, 0, 0, 0, 7776, 99720, 603720, 2300310, 6206730, 12654384, 20310840, 26385240, 28273620, 25302960]

cp's OEIS Frontend

A350793 Triangle read by rows: T(n,k) is the number of digraphs on n labeled nodes with k arcs and a global source (or sink), n >= 1, k = 0..(n-1)^2.

Table of values

List of values