A185643 - cp's OEIS frontend

A185643 Triangular array E(n,k) counting, not necessarily connected, k-regular simple graphs on n vertices with girth exactly 3.

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	1
7	0
8	0
9	0
10	1
11	0
12	0
13	0
14	0
15	1
16	0
17	0
18	1
19	1
20	1
21	1
22	0
23	0
24	1
25	0
26	2
27	0
28	1
29	0
30	0
31	1
32	4
33	5
34	3
35	1
36	1
37	0
38	0
39	2
40	0
41	16
42	0
43	4
44	0
45	1
46	0
47	0
48	2
49	15
50	58
51	59
52	21
53	5
54	1
55	1
56	0
57	0
58	3
59	0
60	264
61	0
62	266
63	0
64	6
65	0
66	1
67	0
68	0
69	4
70	71
71	1535
72	7848
73	7848
74	1547
75	94
76	9
77	1
78	1
79	0
80	0
81	5
82	0
83	10755
84	0
85	367860
86	0
87	10786
88	0
89	10
90	0
91	1

[0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 1, 1, 1, 0, 0, 1, 0, 2, 0, 1, 0, 0, 1, 4, 5, 3, 1, 1, 0, 0, 2, 0, 16, 0, 4, 0, 1, 0, 0, 2, 15, 58, 59, 21, 5, 1, 1, 0, 0, 3, 0, 264, 0, 266, 0, 6, 0, 1, 0, 0, 4, 71, 1535, 7848, 7848, 1547, 94, 9, 1, 1, 0, 0, 5, 0, 10755, 0, 367860, 0, 10786, 0, 10, 0, 1]

cp's OEIS Frontend

A185643 Triangular array E(n,k) counting, not necessarily connected, k-regular simple graphs on n vertices with girth exactly 3.

Table of values

List of values