A049806 - cp's OEIS frontend

A049806 Number of Farey fractions of order n that are <=1/2; cf. A049805.

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	7
7	10
8	12
9	15
10	17
11	22
12	24
13	30
14	33
15	37
16	41
17	49
18	52
19	61
20	65
21	71
22	76
23	87
24	91
25	101
26	107
27	116
28	122
29	136
30	140
31	155
32	163
33	173
34	181
35	193
36	199
37	217
38	226
39	238
40	246
41	266
42	272
43	293
44	303
45	315
46	326
47	349
48	357
49	378
50	388
51	404
52	416
53	442

[1, 2, 3, 4, 6, 7, 10, 12, 15, 17, 22, 24, 30, 33, 37, 41, 49, 52, 61, 65, 71, 76, 87, 91, 101, 107, 116, 122, 136, 140, 155, 163, 173, 181, 193, 199, 217, 226, 238, 246, 266, 272, 293, 303, 315, 326, 349, 357, 378, 388, 404, 416, 442]

cp's OEIS Frontend

A049806 Number of Farey fractions of order n that are <=1/2; cf. A049805.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	7
7	10
8	12
9	15
10	17
11	22
12	24
13	30
14	33
15	37
16	41
17	49
18	52
19	61
20	65
21	71
22	76
23	87
24	91
25	101
26	107
27	116
28	122
29	136
30	140
31	155
32	163
33	173
34	181
35	193
36	199
37	217
38	226
39	238
40	246
41	266
42	272
43	293
44	303
45	315
46	326
47	349
48	357
49	378
50	388
51	404
52	416
53	442

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	7
7	10
8	12
9	15
10	17
11	22
12	24
13	30
14	33
15	37
16	41
17	49
18	52
19	61
20	65
21	71
22	76
23	87
24	91
25	101
26	107
27	116
28	122
29	136
30	140
31	155
32	163
33	173
34	181
35	193
36	199
37	217
38	226
39	238
40	246
41	266
42	272
43	293
44	303
45	315
46	326
47	349
48	357
49	378
50	388
51	404
52	416
53	442

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	7
7	10
8	12
9	15
10	17
11	22
12	24
13	30
14	33
15	37
16	41
17	49
18	52
19	61
20	65
21	71
22	76
23	87
24	91
25	101
26	107
27	116
28	122
29	136
30	140
31	155
32	163
33	173
34	181
35	193
36	199
37	217
38	226
39	238
40	246
41	266
42	272
43	293
44	303
45	315
46	326
47	349
48	357
49	378
50	388
51	404
52	416
53	442