A006843 - cp's OEIS frontend

A006843 Triangle read by rows: row n gives denominators of Farey series of order n.

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	1
7	3
8	2
9	3
10	1
11	1
12	4
13	3
14	2
15	3
16	4
17	1
18	1
19	5
20	4
21	3
22	5
23	2
24	5
25	3
26	4
27	5
28	1
29	1
30	6
31	5
32	4
33	3
34	5
35	2
36	5
37	3
38	4
39	5
40	6
41	1
42	1
43	7
44	6
45	5
46	4
47	7
48	3
49	5
50	7
51	2
52	7
53	5
54	3
55	7
56	4
57	5
58	6
59	7
60	1
61	1
62	8
63	7
64	6
65	5
66	4
67	7
68	3
69	8
70	5
71	7
72	2
73	7
74	5
75	8
76	3
77	7
78	4
79	5
80	6
81	7
82	8
83	1
84	1
85	9
86	8
87	7
88	6
89	5
90	9
91	4
92	7
93	3
94	8
95	5
96	7
97	9
98	2
99	9
100	7
101	5
102	8
103	3
104	7
105	4
106	9
107	5
108	6
109	7
110	8
111	9
112	1

[1, 1, 1, 2, 1, 1, 3, 2, 3, 1, 1, 4, 3, 2, 3, 4, 1, 1, 5, 4, 3, 5, 2, 5, 3, 4, 5, 1, 1, 6, 5, 4, 3, 5, 2, 5, 3, 4, 5, 6, 1, 1, 7, 6, 5, 4, 7, 3, 5, 7, 2, 7, 5, 3, 7, 4, 5, 6, 7, 1, 1, 8, 7, 6, 5, 4, 7, 3, 8, 5, 7, 2, 7, 5, 8, 3, 7, 4, 5, 6, 7, 8, 1, 1, 9, 8, 7, 6, 5, 9, 4, 7, 3, 8, 5, 7, 9, 2, 9, 7, 5, 8, 3, 7, 4, 9, 5, 6, 7, 8, 9, 1]

cp's OEIS Frontend

A006843 Triangle read by rows: row n gives denominators of Farey series of order n.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	1
7	3
8	2
9	3
10	1
11	1
12	4
13	3
14	2
15	3
16	4
17	1
18	1
19	5
20	4
21	3
22	5
23	2
24	5
25	3
26	4
27	5
28	1
29	1
30	6
31	5
32	4
33	3
34	5
35	2
36	5
37	3
38	4
39	5
40	6
41	1
42	1
43	7
44	6
45	5
46	4
47	7
48	3
49	5
50	7
51	2
52	7
53	5
54	3
55	7
56	4
57	5
58	6
59	7
60	1
61	1
62	8
63	7
64	6
65	5
66	4
67	7
68	3
69	8
70	5
71	7
72	2
73	7
74	5
75	8
76	3
77	7
78	4
79	5
80	6
81	7
82	8
83	1
84	1
85	9
86	8
87	7
88	6
89	5
90	9
91	4
92	7
93	3
94	8
95	5
96	7
97	9
98	2
99	9
100	7
101	5
102	8
103	3
104	7
105	4
106	9
107	5
108	6
109	7
110	8
111	9
112	1

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	1
7	3
8	2
9	3
10	1
11	1
12	4
13	3
14	2
15	3
16	4
17	1
18	1
19	5
20	4
21	3
22	5
23	2
24	5
25	3
26	4
27	5
28	1
29	1
30	6
31	5
32	4
33	3
34	5
35	2
36	5
37	3
38	4
39	5
40	6
41	1
42	1
43	7
44	6
45	5
46	4
47	7
48	3
49	5
50	7
51	2
52	7
53	5
54	3
55	7
56	4
57	5
58	6
59	7
60	1
61	1
62	8
63	7
64	6
65	5
66	4
67	7
68	3
69	8
70	5
71	7
72	2
73	7
74	5
75	8
76	3
77	7
78	4
79	5
80	6
81	7
82	8
83	1
84	1
85	9
86	8
87	7
88	6
89	5
90	9
91	4
92	7
93	3
94	8
95	5
96	7
97	9
98	2
99	9
100	7
101	5
102	8
103	3
104	7
105	4
106	9
107	5
108	6
109	7
110	8
111	9
112	1

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	1
7	3
8	2
9	3
10	1
11	1
12	4
13	3
14	2
15	3
16	4
17	1
18	1
19	5
20	4
21	3
22	5
23	2
24	5
25	3
26	4
27	5
28	1
29	1
30	6
31	5
32	4
33	3
34	5
35	2
36	5
37	3
38	4
39	5
40	6
41	1
42	1
43	7
44	6
45	5
46	4
47	7
48	3
49	5
50	7
51	2
52	7
53	5
54	3
55	7
56	4
57	5
58	6
59	7
60	1
61	1
62	8
63	7
64	6
65	5
66	4
67	7
68	3
69	8
70	5
71	7
72	2
73	7
74	5
75	8
76	3
77	7
78	4
79	5
80	6
81	7
82	8
83	1
84	1
85	9
86	8
87	7
88	6
89	5
90	9
91	4
92	7
93	3
94	8
95	5
96	7
97	9
98	2
99	9
100	7
101	5
102	8
103	3
104	7
105	4
106	9
107	5
108	6
109	7
110	8
111	9
112	1