A107457 - cp's OEIS frontend

A107457 Triangle read by rows: row n gives number of nonisomorphic generalized Petersen graphs P(n,k) with girth 8 on n vertices for 1<=k<=floor[(n-1)/2].

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

[1, 0, 0, 1, 2, 1, 4, 1, 4, 3, 2, 3, 4, 3, 5, 6, 7, 2, 7, 5, 8, 8, 8, 6, 8, 6, 10, 9, 11, 7, 13, 6, 12, 12, 13, 9, 15, 11, 13, 14, 16, 10, 17, 11, 17, 14, 17, 15, 21, 12, 19, 18, 18, 13, 23, 14, 22, 20, 22, 16, 26, 15, 24, 21, 25, 16, 26, 21, 26, 24]

cp's OEIS Frontend

A107457 Triangle read by rows: row n gives number of nonisomorphic generalized Petersen graphs P(n,k) with girth 8 on n vertices for 1<=k<=floor[(n-1)/2].

Table of values

List of values

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

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

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