A378915 - cp's OEIS frontend

A378915 Positive integers k such that k is not divisible by sigma(m) for any m >= 2, where sigma is the sum-of-divisors function (A000203).

n	a(n)
1	1
2	2
3	5
4	10
5	11
6	17
7	19
8	22
9	23
10	25
11	29
12	34
13	37
14	41
15	43
16	46
17	47
18	50
19	53
20	55
21	58
22	59
23	61
24	67
25	71
26	73
27	79
28	82
29	83
30	85
31	86
32	89
33	94
34	95
35	97
36	101
37	103
38	106
39	107
40	109
41	113
42	115
43	118
44	122
45	125
46	131
47	134
48	137
49	139
50	142
51	145
52	146
53	149
54	151
55	157
56	163
57	166
58	167
59	170
60	173

[1, 2, 5, 10, 11, 17, 19, 22, 23, 25, 29, 34, 37, 41, 43, 46, 47, 50, 53, 55, 58, 59, 61, 67, 71, 73, 79, 82, 83, 85, 86, 89, 94, 95, 97, 101, 103, 106, 107, 109, 113, 115, 118, 122, 125, 131, 134, 137, 139, 142, 145, 146, 149, 151, 157, 163, 166, 167, 170, 173]

cp's OEIS Frontend

A378915 Positive integers k such that k is not divisible by sigma(m) for any m >= 2, where sigma is the sum-of-divisors function (A000203).

Table of values

List of values

n	a(n)
1	1
2	2
3	5
4	10
5	11
6	17
7	19
8	22
9	23
10	25
11	29
12	34
13	37
14	41
15	43
16	46
17	47
18	50
19	53
20	55
21	58
22	59
23	61
24	67
25	71
26	73
27	79
28	82
29	83
30	85
31	86
32	89
33	94
34	95
35	97
36	101
37	103
38	106
39	107
40	109
41	113
42	115
43	118
44	122
45	125
46	131
47	134
48	137
49	139
50	142
51	145
52	146
53	149
54	151
55	157
56	163
57	166
58	167
59	170
60	173

n	a(n)
1	1
2	2
3	5
4	10
5	11
6	17
7	19
8	22
9	23
10	25
11	29
12	34
13	37
14	41
15	43
16	46
17	47
18	50
19	53
20	55
21	58
22	59
23	61
24	67
25	71
26	73
27	79
28	82
29	83
30	85
31	86
32	89
33	94
34	95
35	97
36	101
37	103
38	106
39	107
40	109
41	113
42	115
43	118
44	122
45	125
46	131
47	134
48	137
49	139
50	142
51	145
52	146
53	149
54	151
55	157
56	163
57	166
58	167
59	170
60	173

n	a(n)
1	1
2	2
3	5
4	10
5	11
6	17
7	19
8	22
9	23
10	25
11	29
12	34
13	37
14	41
15	43
16	46
17	47
18	50
19	53
20	55
21	58
22	59
23	61
24	67
25	71
26	73
27	79
28	82
29	83
30	85
31	86
32	89
33	94
34	95
35	97
36	101
37	103
38	106
39	107
40	109
41	113
42	115
43	118
44	122
45	125
46	131
47	134
48	137
49	139
50	142
51	145
52	146
53	149
54	151
55	157
56	163
57	166
58	167
59	170
60	173