A333161 - cp's OEIS frontend

A333161 Triangle read by rows: T(n,k) is the number of k-regular graphs on n unlabeled nodes with half-edges.

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	2
8	2
9	1
10	1
11	3
12	3
13	3
14	1
15	1
16	3
17	4
18	4
19	3
20	1
21	1
22	4
23	8
24	12
25	8
26	4
27	1
28	1
29	4
30	10
31	24
32	24
33	10
34	4
35	1
36	1
37	5
38	17
39	70
40	118
41	70
42	17
43	5
44	1
45	1
46	5
47	24
48	172
49	634
50	634
51	172
52	24
53	5
54	1
55	1
56	6
57	36
58	525
59	4428
60	9638
61	4428
62	525
63	36
64	6
65	1
66	1
67	6
68	50
69	1530
70	35500
71	187990
72	187990
73	35500
74	1530
75	50
76	6
77	1

[1, 1, 1, 1, 2, 1, 1, 2, 2, 1, 1, 3, 3, 3, 1, 1, 3, 4, 4, 3, 1, 1, 4, 8, 12, 8, 4, 1, 1, 4, 10, 24, 24, 10, 4, 1, 1, 5, 17, 70, 118, 70, 17, 5, 1, 1, 5, 24, 172, 634, 634, 172, 24, 5, 1, 1, 6, 36, 525, 4428, 9638, 4428, 525, 36, 6, 1, 1, 6, 50, 1530, 35500, 187990, 187990, 35500, 1530, 50, 6, 1]

cp's OEIS Frontend

A333161 Triangle read by rows: T(n,k) is the number of k-regular graphs on n unlabeled nodes with half-edges.

Table of values

List of values