A336693 - cp's OEIS frontend

A336693 Period of binary representation of 1/(1+sigma(n)).

n	a(n)
1	1
2	1
3	4
4	1
5	3
6	12
7	6
8	1
9	3
10	18
11	12
12	28
13	4
14	20
15	20
16	1
17	18
18	4
19	6
20	14
21	10
22	36
23	20
24	60
25	1
26	14
27	20
28	18
29	5
30	9
31	10
32	1
33	21
34	20
35	21
36	11
37	12
38	60
39	18
40	12
41	14
42	48
43	12
44	8
45	39
46	9
47	21
48	100
49	28
50	23
51	9
52	30
53	20
54	110
55	9
56	110
57	54
58	12
59	60
60	156
61	6
62	48
63	12
64	1
65	8
66	28
67	22
68	7
69	48
70	28
71	9
72	21
73	20
74	44
75	100
76	46
77	48
78	156
79	54
80	40
81	60
82	7
83	8
84	60

[1, 1, 4, 1, 3, 12, 6, 1, 3, 18, 12, 28, 4, 20, 20, 1, 18, 4, 6, 14, 10, 36, 20, 60, 1, 14, 20, 18, 5, 9, 10, 1, 21, 20, 21, 11, 12, 60, 18, 12, 14, 48, 12, 8, 39, 9, 21, 100, 28, 23, 9, 30, 20, 110, 9, 110, 54, 12, 60, 156, 6, 48, 12, 1, 8, 28, 22, 7, 48, 28, 9, 21, 20, 44, 100, 46, 48, 156, 54, 40, 60, 7, 8, 60]

cp's OEIS Frontend

A336693 Period of binary representation of 1/(1+sigma(n)).

Table of values

List of values

n	a(n)
1	1
2	1
3	4
4	1
5	3
6	12
7	6
8	1
9	3
10	18
11	12
12	28
13	4
14	20
15	20
16	1
17	18
18	4
19	6
20	14
21	10
22	36
23	20
24	60
25	1
26	14
27	20
28	18
29	5
30	9
31	10
32	1
33	21
34	20
35	21
36	11
37	12
38	60
39	18
40	12
41	14
42	48
43	12
44	8
45	39
46	9
47	21
48	100
49	28
50	23
51	9
52	30
53	20
54	110
55	9
56	110
57	54
58	12
59	60
60	156
61	6
62	48
63	12
64	1
65	8
66	28
67	22
68	7
69	48
70	28
71	9
72	21
73	20
74	44
75	100
76	46
77	48
78	156
79	54
80	40
81	60
82	7
83	8
84	60

n	a(n)
1	1
2	1
3	4
4	1
5	3
6	12
7	6
8	1
9	3
10	18
11	12
12	28
13	4
14	20
15	20
16	1
17	18
18	4
19	6
20	14
21	10
22	36
23	20
24	60
25	1
26	14
27	20
28	18
29	5
30	9
31	10
32	1
33	21
34	20
35	21
36	11
37	12
38	60
39	18
40	12
41	14
42	48
43	12
44	8
45	39
46	9
47	21
48	100
49	28
50	23
51	9
52	30
53	20
54	110
55	9
56	110
57	54
58	12
59	60
60	156
61	6
62	48
63	12
64	1
65	8
66	28
67	22
68	7
69	48
70	28
71	9
72	21
73	20
74	44
75	100
76	46
77	48
78	156
79	54
80	40
81	60
82	7
83	8
84	60

n	a(n)
1	1
2	1
3	4
4	1
5	3
6	12
7	6
8	1
9	3
10	18
11	12
12	28
13	4
14	20
15	20
16	1
17	18
18	4
19	6
20	14
21	10
22	36
23	20
24	60
25	1
26	14
27	20
28	18
29	5
30	9
31	10
32	1
33	21
34	20
35	21
36	11
37	12
38	60
39	18
40	12
41	14
42	48
43	12
44	8
45	39
46	9
47	21
48	100
49	28
50	23
51	9
52	30
53	20
54	110
55	9
56	110
57	54
58	12
59	60
60	156
61	6
62	48
63	12
64	1
65	8
66	28
67	22
68	7
69	48
70	28
71	9
72	21
73	20
74	44
75	100
76	46
77	48
78	156
79	54
80	40
81	60
82	7
83	8
84	60