A059109 - cp's OEIS frontend

A059109 Numbers m such that m*phi(m)-1 is prime, where phi is the Euler function (A000010).

n	a(n)
1	3
2	4
3	5
4	6
5	7
6	8
7	9
8	11
9	12
10	14
11	16
12	17
13	18
14	21
15	24
16	25
17	26
18	29
19	30
20	31
21	33
22	35
23	36
24	38
25	42
26	47
27	54
28	61
29	63
30	65
31	66
32	67
33	71
34	74
35	75
36	78
37	81
38	87
39	91
40	97
41	99
42	101
43	105
44	117
45	119
46	121
47	123
48	127
49	128
50	131
51	132
52	135
53	139
54	140
55	143
56	144
57	147
58	149
59	154
60	156
61	158
62	162
63	172

[3, 4, 5, 6, 7, 8, 9, 11, 12, 14, 16, 17, 18, 21, 24, 25, 26, 29, 30, 31, 33, 35, 36, 38, 42, 47, 54, 61, 63, 65, 66, 67, 71, 74, 75, 78, 81, 87, 91, 97, 99, 101, 105, 117, 119, 121, 123, 127, 128, 131, 132, 135, 139, 140, 143, 144, 147, 149, 154, 156, 158, 162, 172]

cp's OEIS Frontend

A059109 Numbers m such that m*phi(m)-1 is prime, where phi is the Euler function (A000010).

Table of values

List of values

n	a(n)
1	3
2	4
3	5
4	6
5	7
6	8
7	9
8	11
9	12
10	14
11	16
12	17
13	18
14	21
15	24
16	25
17	26
18	29
19	30
20	31
21	33
22	35
23	36
24	38
25	42
26	47
27	54
28	61
29	63
30	65
31	66
32	67
33	71
34	74
35	75
36	78
37	81
38	87
39	91
40	97
41	99
42	101
43	105
44	117
45	119
46	121
47	123
48	127
49	128
50	131
51	132
52	135
53	139
54	140
55	143
56	144
57	147
58	149
59	154
60	156
61	158
62	162
63	172

n	a(n)
1	3
2	4
3	5
4	6
5	7
6	8
7	9
8	11
9	12
10	14
11	16
12	17
13	18
14	21
15	24
16	25
17	26
18	29
19	30
20	31
21	33
22	35
23	36
24	38
25	42
26	47
27	54
28	61
29	63
30	65
31	66
32	67
33	71
34	74
35	75
36	78
37	81
38	87
39	91
40	97
41	99
42	101
43	105
44	117
45	119
46	121
47	123
48	127
49	128
50	131
51	132
52	135
53	139
54	140
55	143
56	144
57	147
58	149
59	154
60	156
61	158
62	162
63	172

n	a(n)
1	3
2	4
3	5
4	6
5	7
6	8
7	9
8	11
9	12
10	14
11	16
12	17
13	18
14	21
15	24
16	25
17	26
18	29
19	30
20	31
21	33
22	35
23	36
24	38
25	42
26	47
27	54
28	61
29	63
30	65
31	66
32	67
33	71
34	74
35	75
36	78
37	81
38	87
39	91
40	97
41	99
42	101
43	105
44	117
45	119
46	121
47	123
48	127
49	128
50	131
51	132
52	135
53	139
54	140
55	143
56	144
57	147
58	149
59	154
60	156
61	158
62	162
63	172