A138107 - cp's OEIS frontend

A138107 Infinite square array: T(n,k) = number of directed multigraphs with loops with n arcs and k vertices; read by falling antidiagonals.

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	6
13	1
14	0
15	1
16	2
17	10
18	10
19	1
20	0
21	1
22	2
23	11
24	31
25	19
26	1
27	0
28	1
29	2
30	11
31	47
32	90
33	28
34	1
35	0
36	1
37	2
38	11
39	51
40	198
41	222
42	44
43	1
44	0
45	1
46	2
47	11
48	52
49	269
50	713
51	520
52	60
53	1
54	0
55	1
56	2
57	11
58	52
59	291
60	1270
61	2423
62	1090
63	85
64	1
65	0
66	1
67	2
68	11
69	52
70	295
71	1596
72	5776
73	7388
74	2180
75	110
76	1
77	0

[1, 1, 0, 1, 1, 0, 1, 2, 1, 0, 1, 2, 6, 1, 0, 1, 2, 10, 10, 1, 0, 1, 2, 11, 31, 19, 1, 0, 1, 2, 11, 47, 90, 28, 1, 0, 1, 2, 11, 51, 198, 222, 44, 1, 0, 1, 2, 11, 52, 269, 713, 520, 60, 1, 0, 1, 2, 11, 52, 291, 1270, 2423, 1090, 85, 1, 0, 1, 2, 11, 52, 295, 1596, 5776, 7388, 2180, 110, 1, 0]

cp's OEIS Frontend

A138107 Infinite square array: T(n,k) = number of directed multigraphs with loops with n arcs and k vertices; read by falling antidiagonals.

Table of values

List of values