A365138 - cp's OEIS frontend

A365138 Genus of the quotient of the modular curve X_1(n) by the Fricke involution.

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	1
14	0
15	0
16	1
17	2
18	1
19	3
20	1
21	2
22	3
23	5
24	2
25	6
26	4
27	6
28	5
29	10
30	4
31	12
32	8
33	10
34	10
35	11
36	8
37	20
38	13
39	15
40	12
41	24
42	12
43	28
44	17
45	20
46	22
47	33
48	18
49	34
50	23
51	31
52	27
53	45
54	25
55	39
56	29
57	42
58	39
59	56
60	28
61	62
62	44
63	47
64	46
65	59
66	39
67	77
68	51
69	65
70	48
71	85
72	48
73	93
74	66
75	71
76	67
77	89
78	60
79	109

[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 2, 1, 3, 1, 2, 3, 5, 2, 6, 4, 6, 5, 10, 4, 12, 8, 10, 10, 11, 8, 20, 13, 15, 12, 24, 12, 28, 17, 20, 22, 33, 18, 34, 23, 31, 27, 45, 25, 39, 29, 42, 39, 56, 28, 62, 44, 47, 46, 59, 39, 77, 51, 65, 48, 85, 48, 93, 66, 71, 67, 89, 60, 109]

cp's OEIS Frontend

A365138 Genus of the quotient of the modular curve X_1(n) by the Fricke involution.

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	1
14	0
15	0
16	1
17	2
18	1
19	3
20	1
21	2
22	3
23	5
24	2
25	6
26	4
27	6
28	5
29	10
30	4
31	12
32	8
33	10
34	10
35	11
36	8
37	20
38	13
39	15
40	12
41	24
42	12
43	28
44	17
45	20
46	22
47	33
48	18
49	34
50	23
51	31
52	27
53	45
54	25
55	39
56	29
57	42
58	39
59	56
60	28
61	62
62	44
63	47
64	46
65	59
66	39
67	77
68	51
69	65
70	48
71	85
72	48
73	93
74	66
75	71
76	67
77	89
78	60
79	109

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	1
14	0
15	0
16	1
17	2
18	1
19	3
20	1
21	2
22	3
23	5
24	2
25	6
26	4
27	6
28	5
29	10
30	4
31	12
32	8
33	10
34	10
35	11
36	8
37	20
38	13
39	15
40	12
41	24
42	12
43	28
44	17
45	20
46	22
47	33
48	18
49	34
50	23
51	31
52	27
53	45
54	25
55	39
56	29
57	42
58	39
59	56
60	28
61	62
62	44
63	47
64	46
65	59
66	39
67	77
68	51
69	65
70	48
71	85
72	48
73	93
74	66
75	71
76	67
77	89
78	60
79	109

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	1
14	0
15	0
16	1
17	2
18	1
19	3
20	1
21	2
22	3
23	5
24	2
25	6
26	4
27	6
28	5
29	10
30	4
31	12
32	8
33	10
34	10
35	11
36	8
37	20
38	13
39	15
40	12
41	24
42	12
43	28
44	17
45	20
46	22
47	33
48	18
49	34
50	23
51	31
52	27
53	45
54	25
55	39
56	29
57	42
58	39
59	56
60	28
61	62
62	44
63	47
64	46
65	59
66	39
67	77
68	51
69	65
70	48
71	85
72	48
73	93
74	66
75	71
76	67
77	89
78	60
79	109