A067350 - cp's OEIS frontend

A067350 Numbers n such that sigma(n)+phi(n) has exactly 4 divisors.

n	a(n)
1	3
2	5
3	6
4	7
5	10
6	11
7	13
8	16
9	17
10	19
11	22
12	23
13	25
14	27
15	29
16	31
17	37
18	40
19	41
20	43
21	46
22	47
23	52
24	53
25	58
26	59
27	61
28	64
29	67
30	68
31	71
32	72
33	73
34	79
35	80
36	82
37	83
38	89
39	97
40	98
41	101
42	103
43	106
44	107
45	109
46	113
47	117
48	127
49	128
50	131
51	136
52	137
53	139
54	144
55	149
56	151
57	157
58	162
59	163
60	166
61	167
62	169

[3, 5, 6, 7, 10, 11, 13, 16, 17, 19, 22, 23, 25, 27, 29, 31, 37, 40, 41, 43, 46, 47, 52, 53, 58, 59, 61, 64, 67, 68, 71, 72, 73, 79, 80, 82, 83, 89, 97, 98, 101, 103, 106, 107, 109, 113, 117, 127, 128, 131, 136, 137, 139, 144, 149, 151, 157, 162, 163, 166, 167, 169]

cp's OEIS Frontend

A067350 Numbers n such that sigma(n)+phi(n) has exactly 4 divisors.

Table of values

List of values

n	a(n)
1	3
2	5
3	6
4	7
5	10
6	11
7	13
8	16
9	17
10	19
11	22
12	23
13	25
14	27
15	29
16	31
17	37
18	40
19	41
20	43
21	46
22	47
23	52
24	53
25	58
26	59
27	61
28	64
29	67
30	68
31	71
32	72
33	73
34	79
35	80
36	82
37	83
38	89
39	97
40	98
41	101
42	103
43	106
44	107
45	109
46	113
47	117
48	127
49	128
50	131
51	136
52	137
53	139
54	144
55	149
56	151
57	157
58	162
59	163
60	166
61	167
62	169

n	a(n)
1	3
2	5
3	6
4	7
5	10
6	11
7	13
8	16
9	17
10	19
11	22
12	23
13	25
14	27
15	29
16	31
17	37
18	40
19	41
20	43
21	46
22	47
23	52
24	53
25	58
26	59
27	61
28	64
29	67
30	68
31	71
32	72
33	73
34	79
35	80
36	82
37	83
38	89
39	97
40	98
41	101
42	103
43	106
44	107
45	109
46	113
47	117
48	127
49	128
50	131
51	136
52	137
53	139
54	144
55	149
56	151
57	157
58	162
59	163
60	166
61	167
62	169

n	a(n)
1	3
2	5
3	6
4	7
5	10
6	11
7	13
8	16
9	17
10	19
11	22
12	23
13	25
14	27
15	29
16	31
17	37
18	40
19	41
20	43
21	46
22	47
23	52
24	53
25	58
26	59
27	61
28	64
29	67
30	68
31	71
32	72
33	73
34	79
35	80
36	82
37	83
38	89
39	97
40	98
41	101
42	103
43	106
44	107
45	109
46	113
47	117
48	127
49	128
50	131
51	136
52	137
53	139
54	144
55	149
56	151
57	157
58	162
59	163
60	166
61	167
62	169