A186718 - cp's OEIS frontend

A186718 Irregular triangle C(n,k): number of connected k-regular simple graphs on n vertices with girth at least eight.

n	a(n)
1	1
2	0
3	1
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	0
16	1
17	0
18	0
19	1
20	0
21	0
22	1
23	0
24	0
25	1
26	0
27	0
28	1
29	0
30	0
31	1
32	0
33	0
34	1
35	0
36	0
37	1
38	0
39	0
40	1
41	0
42	0
43	1
44	0
45	0
46	1
47	0
48	0
49	1
50	0
51	0
52	1
53	0
54	0
55	1
56	0
57	0
58	1
59	0
60	0
61	1
62	0
63	0
64	1
65	0
66	0
67	1
68	0
69	0
70	1
71	0
72	0
73	1
74	0
75	0
76	1
77	0
78	0
79	1
80	0
81	0
82	1
83	1
84	0
85	0
86	1
87	0
88	0
89	0
90	1
91	0
92	0
93	0
94	1
95	0
96	0
97	0
98	1
99	1
100	0
101	0
102	1
103	0
104	0
105	0
106	1
107	3

[1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 3]

cp's OEIS Frontend

A186718 Irregular triangle C(n,k): number of connected k-regular simple graphs on n vertices with girth at least eight.

Table of values

List of values

n	a(n)
1	1
2	0
3	1
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	0
16	1
17	0
18	0
19	1
20	0
21	0
22	1
23	0
24	0
25	1
26	0
27	0
28	1
29	0
30	0
31	1
32	0
33	0
34	1
35	0
36	0
37	1
38	0
39	0
40	1
41	0
42	0
43	1
44	0
45	0
46	1
47	0
48	0
49	1
50	0
51	0
52	1
53	0
54	0
55	1
56	0
57	0
58	1
59	0
60	0
61	1
62	0
63	0
64	1
65	0
66	0
67	1
68	0
69	0
70	1
71	0
72	0
73	1
74	0
75	0
76	1
77	0
78	0
79	1
80	0
81	0
82	1
83	1
84	0
85	0
86	1
87	0
88	0
89	0
90	1
91	0
92	0
93	0
94	1
95	0
96	0
97	0
98	1
99	1
100	0
101	0
102	1
103	0
104	0
105	0
106	1
107	3

n	a(n)
1	1
2	0
3	1
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	0
16	1
17	0
18	0
19	1
20	0
21	0
22	1
23	0
24	0
25	1
26	0
27	0
28	1
29	0
30	0
31	1
32	0
33	0
34	1
35	0
36	0
37	1
38	0
39	0
40	1
41	0
42	0
43	1
44	0
45	0
46	1
47	0
48	0
49	1
50	0
51	0
52	1
53	0
54	0
55	1
56	0
57	0
58	1
59	0
60	0
61	1
62	0
63	0
64	1
65	0
66	0
67	1
68	0
69	0
70	1
71	0
72	0
73	1
74	0
75	0
76	1
77	0
78	0
79	1
80	0
81	0
82	1
83	1
84	0
85	0
86	1
87	0
88	0
89	0
90	1
91	0
92	0
93	0
94	1
95	0
96	0
97	0
98	1
99	1
100	0
101	0
102	1
103	0
104	0
105	0
106	1
107	3

n	a(n)
1	1
2	0
3	1
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	0
16	1
17	0
18	0
19	1
20	0
21	0
22	1
23	0
24	0
25	1
26	0
27	0
28	1
29	0
30	0
31	1
32	0
33	0
34	1
35	0
36	0
37	1
38	0
39	0
40	1
41	0
42	0
43	1
44	0
45	0
46	1
47	0
48	0
49	1
50	0
51	0
52	1
53	0
54	0
55	1
56	0
57	0
58	1
59	0
60	0
61	1
62	0
63	0
64	1
65	0
66	0
67	1
68	0
69	0
70	1
71	0
72	0
73	1
74	0
75	0
76	1
77	0
78	0
79	1
80	0
81	0
82	1
83	1
84	0
85	0
86	1
87	0
88	0
89	0
90	1
91	0
92	0
93	0
94	1
95	0
96	0
97	0
98	1
99	1
100	0
101	0
102	1
103	0
104	0
105	0
106	1
107	3