A118975 - cp's OEIS frontend

A118975 Triangular array: row n consists of M times n-th-order Farey fractions, where M is the LCM of their denominators.

n	a(n)
1	1
2	1
3	2
4	2
5	3
6	4
7	6
8	3
9	4
10	6
11	8
12	9
13	12
14	12
15	15
16	20
17	24
18	30
19	36
20	40
21	45
22	48
23	60
24	10
25	12
26	15
27	20
28	24
29	30
30	36
31	40
32	45
33	48
34	50
35	60
36	60
37	70
38	84
39	105
40	120
41	140
42	168
43	180
44	210
45	240
46	252
47	280
48	300
49	315
50	336
51	350
52	360
53	420
54	105
55	120
56	140
57	168
58	210
59	240

[1, 1, 2, 2, 3, 4, 6, 3, 4, 6, 8, 9, 12, 12, 15, 20, 24, 30, 36, 40, 45, 48, 60, 10, 12, 15, 20, 24, 30, 36, 40, 45, 48, 50, 60, 60, 70, 84, 105, 120, 140, 168, 180, 210, 240, 252, 280, 300, 315, 336, 350, 360, 420, 105, 120, 140, 168, 210, 240]

cp's OEIS Frontend

A118975 Triangular array: row n consists of M times n-th-order Farey fractions, where M is the LCM of their denominators.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	2
5	3
6	4
7	6
8	3
9	4
10	6
11	8
12	9
13	12
14	12
15	15
16	20
17	24
18	30
19	36
20	40
21	45
22	48
23	60
24	10
25	12
26	15
27	20
28	24
29	30
30	36
31	40
32	45
33	48
34	50
35	60
36	60
37	70
38	84
39	105
40	120
41	140
42	168
43	180
44	210
45	240
46	252
47	280
48	300
49	315
50	336
51	350
52	360
53	420
54	105
55	120
56	140
57	168
58	210
59	240

n	a(n)
1	1
2	1
3	2
4	2
5	3
6	4
7	6
8	3
9	4
10	6
11	8
12	9
13	12
14	12
15	15
16	20
17	24
18	30
19	36
20	40
21	45
22	48
23	60
24	10
25	12
26	15
27	20
28	24
29	30
30	36
31	40
32	45
33	48
34	50
35	60
36	60
37	70
38	84
39	105
40	120
41	140
42	168
43	180
44	210
45	240
46	252
47	280
48	300
49	315
50	336
51	350
52	360
53	420
54	105
55	120
56	140
57	168
58	210
59	240

n	a(n)
1	1
2	1
3	2
4	2
5	3
6	4
7	6
8	3
9	4
10	6
11	8
12	9
13	12
14	12
15	15
16	20
17	24
18	30
19	36
20	40
21	45
22	48
23	60
24	10
25	12
26	15
27	20
28	24
29	30
30	36
31	40
32	45
33	48
34	50
35	60
36	60
37	70
38	84
39	105
40	120
41	140
42	168
43	180
44	210
45	240
46	252
47	280
48	300
49	315
50	336
51	350
52	360
53	420
54	105
55	120
56	140
57	168
58	210
59	240