A049812 - cp's OEIS frontend

A049812 a(n)=number of Farey fractions of order n that are <=1/8; cf. A049805.

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	2
9	3
10	4
11	5
12	6
13	7
14	8
15	9
16	10
17	12
18	13
19	15
20	16
21	18
22	19
23	21
24	22
25	25
26	27
27	29
28	31
29	34
30	35
31	38
32	40
33	43
34	45
35	49
36	50
37	54
38	56
39	59
40	61
41	66
42	68
43	73
44	76
45	79
46	82
47	87
48	89
49	95
50	97
51	101
52	104
53	110
54	112
55	117
56	120
57	125
58	129
59	136
60	138

[1, 1, 1, 1, 1, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 15, 16, 18, 19, 21, 22, 25, 27, 29, 31, 34, 35, 38, 40, 43, 45, 49, 50, 54, 56, 59, 61, 66, 68, 73, 76, 79, 82, 87, 89, 95, 97, 101, 104, 110, 112, 117, 120, 125, 129, 136, 138]

cp's OEIS Frontend

A049812 a(n)=number of Farey fractions of order n that are <=1/8; cf. A049805.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	2
9	3
10	4
11	5
12	6
13	7
14	8
15	9
16	10
17	12
18	13
19	15
20	16
21	18
22	19
23	21
24	22
25	25
26	27
27	29
28	31
29	34
30	35
31	38
32	40
33	43
34	45
35	49
36	50
37	54
38	56
39	59
40	61
41	66
42	68
43	73
44	76
45	79
46	82
47	87
48	89
49	95
50	97
51	101
52	104
53	110
54	112
55	117
56	120
57	125
58	129
59	136
60	138

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	2
9	3
10	4
11	5
12	6
13	7
14	8
15	9
16	10
17	12
18	13
19	15
20	16
21	18
22	19
23	21
24	22
25	25
26	27
27	29
28	31
29	34
30	35
31	38
32	40
33	43
34	45
35	49
36	50
37	54
38	56
39	59
40	61
41	66
42	68
43	73
44	76
45	79
46	82
47	87
48	89
49	95
50	97
51	101
52	104
53	110
54	112
55	117
56	120
57	125
58	129
59	136
60	138

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	2
9	3
10	4
11	5
12	6
13	7
14	8
15	9
16	10
17	12
18	13
19	15
20	16
21	18
22	19
23	21
24	22
25	25
26	27
27	29
28	31
29	34
30	35
31	38
32	40
33	43
34	45
35	49
36	50
37	54
38	56
39	59
40	61
41	66
42	68
43	73
44	76
45	79
46	82
47	87
48	89
49	95
50	97
51	101
52	104
53	110
54	112
55	117
56	120
57	125
58	129
59	136
60	138