A294446 - cp's OEIS frontend

A294446 The tree of Farey fractions (or the Stern-Brocot tree), read across rows (the fraction i/j is represented as the pair i,j).

n	a(n)
0	0
1	1
2	1
3	2
4	1
5	1
6	0
7	1
8	1
9	3
10	1
11	2
12	2
13	3
14	1
15	1
16	0
17	1
18	1
19	4
20	1
21	3
22	2
23	5
24	1
25	2
26	3
27	5
28	2
29	3
30	3
31	4
32	1
33	1
34	0
35	1
36	1
37	5
38	1
39	4
40	2
41	7
42	1
43	3
44	3
45	8
46	2
47	5
48	3
49	7
50	1
51	2
52	4
53	7
54	3
55	5
56	5
57	8
58	2
59	3
60	5
61	7
62	3
63	4
64	4
65	5
66	1
67	1
68	0
69	1
70	1
71	6
72	1
73	5
74	2
75	9
76	1
77	4
78	3
79	11
80	2
81	7
82	3
83	10
84	1
85	3
86	4
87	11
88	3
89	8
90	5
91	13
92	2
93	5
94	5
95	12
96	3
97	7
98	4
99	9
100	1
101	2
102	5
103	9
104	4

[0, 1, 1, 2, 1, 1, 0, 1, 1, 3, 1, 2, 2, 3, 1, 1, 0, 1, 1, 4, 1, 3, 2, 5, 1, 2, 3, 5, 2, 3, 3, 4, 1, 1, 0, 1, 1, 5, 1, 4, 2, 7, 1, 3, 3, 8, 2, 5, 3, 7, 1, 2, 4, 7, 3, 5, 5, 8, 2, 3, 5, 7, 3, 4, 4, 5, 1, 1, 0, 1, 1, 6, 1, 5, 2, 9, 1, 4, 3, 11, 2, 7, 3, 10, 1, 3, 4, 11, 3, 8, 5, 13, 2, 5, 5, 12, 3, 7, 4, 9, 1, 2, 5, 9, 4]

cp's OEIS Frontend

A294446 The tree of Farey fractions (or the Stern-Brocot tree), read across rows (the fraction i/j is represented as the pair i,j).

Table of values

List of values

n	a(n)
0	0
1	1
2	1
3	2
4	1
5	1
6	0
7	1
8	1
9	3
10	1
11	2
12	2
13	3
14	1
15	1
16	0
17	1
18	1
19	4
20	1
21	3
22	2
23	5
24	1
25	2
26	3
27	5
28	2
29	3
30	3
31	4
32	1
33	1
34	0
35	1
36	1
37	5
38	1
39	4
40	2
41	7
42	1
43	3
44	3
45	8
46	2
47	5
48	3
49	7
50	1
51	2
52	4
53	7
54	3
55	5
56	5
57	8
58	2
59	3
60	5
61	7
62	3
63	4
64	4
65	5
66	1
67	1
68	0
69	1
70	1
71	6
72	1
73	5
74	2
75	9
76	1
77	4
78	3
79	11
80	2
81	7
82	3
83	10
84	1
85	3
86	4
87	11
88	3
89	8
90	5
91	13
92	2
93	5
94	5
95	12
96	3
97	7
98	4
99	9
100	1
101	2
102	5
103	9
104	4

n	a(n)
0	0
1	1
2	1
3	2
4	1
5	1
6	0
7	1
8	1
9	3
10	1
11	2
12	2
13	3
14	1
15	1
16	0
17	1
18	1
19	4
20	1
21	3
22	2
23	5
24	1
25	2
26	3
27	5
28	2
29	3
30	3
31	4
32	1
33	1
34	0
35	1
36	1
37	5
38	1
39	4
40	2
41	7
42	1
43	3
44	3
45	8
46	2
47	5
48	3
49	7
50	1
51	2
52	4
53	7
54	3
55	5
56	5
57	8
58	2
59	3
60	5
61	7
62	3
63	4
64	4
65	5
66	1
67	1
68	0
69	1
70	1
71	6
72	1
73	5
74	2
75	9
76	1
77	4
78	3
79	11
80	2
81	7
82	3
83	10
84	1
85	3
86	4
87	11
88	3
89	8
90	5
91	13
92	2
93	5
94	5
95	12
96	3
97	7
98	4
99	9
100	1
101	2
102	5
103	9
104	4

n	a(n)
0	0
1	1
2	1
3	2
4	1
5	1
6	0
7	1
8	1
9	3
10	1
11	2
12	2
13	3
14	1
15	1
16	0
17	1
18	1
19	4
20	1
21	3
22	2
23	5
24	1
25	2
26	3
27	5
28	2
29	3
30	3
31	4
32	1
33	1
34	0
35	1
36	1
37	5
38	1
39	4
40	2
41	7
42	1
43	3
44	3
45	8
46	2
47	5
48	3
49	7
50	1
51	2
52	4
53	7
54	3
55	5
56	5
57	8
58	2
59	3
60	5
61	7
62	3
63	4
64	4
65	5
66	1
67	1
68	0
69	1
70	1
71	6
72	1
73	5
74	2
75	9
76	1
77	4
78	3
79	11
80	2
81	7
82	3
83	10
84	1
85	3
86	4
87	11
88	3
89	8
90	5
91	13
92	2
93	5
94	5
95	12
96	3
97	7
98	4
99	9
100	1
101	2
102	5
103	9
104	4