A129620 - cp's OEIS frontend

A129620 Square array read by falling antidiagonals: T(n,k) is the number of connected directed multigraphs with loops with n arcs and at most k vertices.

n	a(n)
0	1
1	1
2	0
3	1
4	1
5	0
6	1
7	2
8	1
9	0
10	1
11	2
12	5
13	1
14	0
15	1
16	2
17	8
18	9
19	1
20	0
21	1
22	2
23	8
24	24
25	17
26	1
27	0
28	1
29	2
30	8
31	32
32	74
33	26
34	1
35	0
36	1
37	2
38	8
39	32
40	140
41	189
42	41
43	1
44	0
45	1
46	2
47	8
48	32
49	167
50	542
51	460
52	57
53	1
54	0
55	1
56	2
57	8
58	32
59	167
60	837
61	1964
62	989
63	81
64	1
65	0
66	1
67	2
68	8
69	32
70	167
71	928
72	4167
73	6291
74	2021
75	106
76	1
77	0

[1, 1, 0, 1, 1, 0, 1, 2, 1, 0, 1, 2, 5, 1, 0, 1, 2, 8, 9, 1, 0, 1, 2, 8, 24, 17, 1, 0, 1, 2, 8, 32, 74, 26, 1, 0, 1, 2, 8, 32, 140, 189, 41, 1, 0, 1, 2, 8, 32, 167, 542, 460, 57, 1, 0, 1, 2, 8, 32, 167, 837, 1964, 989, 81, 1, 0, 1, 2, 8, 32, 167, 928, 4167, 6291, 2021, 106, 1, 0]

cp's OEIS Frontend

A129620 Square array read by falling antidiagonals: T(n,k) is the number of connected directed multigraphs with loops with n arcs and at most k vertices.

Table of values

List of values