A282255 - cp's OEIS frontend

A282255 Least k > 0 such that sigma(n) divides sigma(n+k).

n	a(n)
1	1
2	3
3	3
4	8
5	1
6	5
7	7
8	16
9	9
10	7
11	3
12	16
13	7
14	1
15	8
16	9
17	5
18	27
19	5
20	6
21	10
22	8
23	7
24	14
25	23
26	15
27	27
28	11
29	9
30	16
31	11
32	36
33	2
34	19
35	7
36	81
37	37
38	16
39	21
40	18
41	3
42	20
43	43
44	16
45	45
46	5
47	15
48	27
49	25
50	30
51	4
52	45
53	32
54	2
55	11
56	31
57	22
58	30
59	28
60	18
61	14
62	7
63	40
64	128
65	13
66	4
67	67
68	14
69	8
70	24
71	23
72	189
73	73
74	39
75	37
76	32
77	28
78	14
79	35
80	42
81	81
82	14
83	9
84	40
85	17
86	45

[1, 3, 3, 8, 1, 5, 7, 16, 9, 7, 3, 16, 7, 1, 8, 9, 5, 27, 5, 6, 10, 8, 7, 14, 23, 15, 27, 11, 9, 16, 11, 36, 2, 19, 7, 81, 37, 16, 21, 18, 3, 20, 43, 16, 45, 5, 15, 27, 25, 30, 4, 45, 32, 2, 11, 31, 22, 30, 28, 18, 14, 7, 40, 128, 13, 4, 67, 14, 8, 24, 23, 189, 73, 39, 37, 32, 28, 14, 35, 42, 81, 14, 9, 40, 17, 45]

cp's OEIS Frontend

A282255 Least k > 0 such that sigma(n) divides sigma(n+k).

Table of values

List of values

n	a(n)
1	1
2	3
3	3
4	8
5	1
6	5
7	7
8	16
9	9
10	7
11	3
12	16
13	7
14	1
15	8
16	9
17	5
18	27
19	5
20	6
21	10
22	8
23	7
24	14
25	23
26	15
27	27
28	11
29	9
30	16
31	11
32	36
33	2
34	19
35	7
36	81
37	37
38	16
39	21
40	18
41	3
42	20
43	43
44	16
45	45
46	5
47	15
48	27
49	25
50	30
51	4
52	45
53	32
54	2
55	11
56	31
57	22
58	30
59	28
60	18
61	14
62	7
63	40
64	128
65	13
66	4
67	67
68	14
69	8
70	24
71	23
72	189
73	73
74	39
75	37
76	32
77	28
78	14
79	35
80	42
81	81
82	14
83	9
84	40
85	17
86	45

n	a(n)
1	1
2	3
3	3
4	8
5	1
6	5
7	7
8	16
9	9
10	7
11	3
12	16
13	7
14	1
15	8
16	9
17	5
18	27
19	5
20	6
21	10
22	8
23	7
24	14
25	23
26	15
27	27
28	11
29	9
30	16
31	11
32	36
33	2
34	19
35	7
36	81
37	37
38	16
39	21
40	18
41	3
42	20
43	43
44	16
45	45
46	5
47	15
48	27
49	25
50	30
51	4
52	45
53	32
54	2
55	11
56	31
57	22
58	30
59	28
60	18
61	14
62	7
63	40
64	128
65	13
66	4
67	67
68	14
69	8
70	24
71	23
72	189
73	73
74	39
75	37
76	32
77	28
78	14
79	35
80	42
81	81
82	14
83	9
84	40
85	17
86	45

n	a(n)
1	1
2	3
3	3
4	8
5	1
6	5
7	7
8	16
9	9
10	7
11	3
12	16
13	7
14	1
15	8
16	9
17	5
18	27
19	5
20	6
21	10
22	8
23	7
24	14
25	23
26	15
27	27
28	11
29	9
30	16
31	11
32	36
33	2
34	19
35	7
36	81
37	37
38	16
39	21
40	18
41	3
42	20
43	43
44	16
45	45
46	5
47	15
48	27
49	25
50	30
51	4
52	45
53	32
54	2
55	11
56	31
57	22
58	30
59	28
60	18
61	14
62	7
63	40
64	128
65	13
66	4
67	67
68	14
69	8
70	24
71	23
72	189
73	73
74	39
75	37
76	32
77	28
78	14
79	35
80	42
81	81
82	14
83	9
84	40
85	17
86	45