A325971 - cp's OEIS frontend

A325971 a(n) is the least k >= A007947(n) such that -n + k and (n-sigma(n))+k are relatively prime.

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

[1, 2, 4, 2, 6, 7, 8, 2, 3, 11, 12, 7, 14, 15, 16, 2, 18, 7, 20, 11, 22, 23, 24, 7, 5, 27, 4, 27, 30, 31, 32, 2, 34, 35, 36, 6, 38, 39, 40, 11, 42, 43, 44, 23, 16, 47, 48, 7, 7, 10, 52, 27, 54, 7, 56, 15, 58, 59, 60, 31, 62, 63, 22, 2, 66, 67, 68, 35, 70, 71, 72, 7, 74, 75, 16, 39, 78, 79, 80, 11, 3, 83, 84, 43, 86, 87, 88, 23, 90, 31]

cp's OEIS Frontend

A325971 a(n) is the least k >= A007947(n) such that -n + k and (n-sigma(n))+k are relatively prime.

Table of values

List of values

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

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

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