A226130 - cp's OEIS frontend

A226130 Denominators of rational numbers as generated by the rules: 1 is in S, and if nonzero x is in S, then x+1 and -1/x are in S. (See Comments.)

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

[1, 1, 1, 1, 2, 1, 1, 3, 2, 1, 4, 3, 2, 1, 1, 5, 4, 3, 2, 2, 3, 1, 6, 5, 4, 3, 3, 5, 2, 5, 3, 1, 7, 6, 5, 4, 4, 7, 3, 8, 5, 2, 7, 5, 3, 1, 1, 8, 7, 6, 5, 5, 9, 4, 11, 7, 3, 11, 8, 5, 2, 2, 9, 7, 5, 3, 3, 4, 1, 9, 8, 7, 6, 6, 11, 5, 14, 9, 4, 15, 11, 7, 3, 3]

cp's OEIS Frontend

A226130 Denominators of rational numbers as generated by the rules: 1 is in S, and if nonzero x is in S, then x+1 and -1/x are in S. (See Comments.)

Table of values

List of values

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

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

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