A066669 - cp's OEIS frontend

A066669 Numbers m such that phi(m) = 2^k*prime for some k >= 0.

n	a(n)
1	7
2	9
3	11
4	13
5	14
6	18
7	21
8	22
9	23
10	25
11	26
12	28
13	29
14	33
15	35
16	36
17	39
18	41
19	42
20	44
21	45
22	46
23	47
24	50
25	52
26	53
27	55
28	56
29	58
30	59
31	65
32	66
33	69
34	70
35	72
36	75
37	78
38	82
39	83
40	84
41	87
42	88
43	89
44	90
45	92
46	94
47	97
48	100
49	104
50	105
51	106
52	107
53	110
54	112
55	113
56	115
57	116
58	118
59	119
60	123
61	130
62	132
63	137
64	138

[7, 9, 11, 13, 14, 18, 21, 22, 23, 25, 26, 28, 29, 33, 35, 36, 39, 41, 42, 44, 45, 46, 47, 50, 52, 53, 55, 56, 58, 59, 65, 66, 69, 70, 72, 75, 78, 82, 83, 84, 87, 88, 89, 90, 92, 94, 97, 100, 104, 105, 106, 107, 110, 112, 113, 115, 116, 118, 119, 123, 130, 132, 137, 138]

cp's OEIS Frontend

A066669 Numbers m such that phi(m) = 2^k*prime for some k >= 0.

Table of values

List of values

n	a(n)
1	7
2	9
3	11
4	13
5	14
6	18
7	21
8	22
9	23
10	25
11	26
12	28
13	29
14	33
15	35
16	36
17	39
18	41
19	42
20	44
21	45
22	46
23	47
24	50
25	52
26	53
27	55
28	56
29	58
30	59
31	65
32	66
33	69
34	70
35	72
36	75
37	78
38	82
39	83
40	84
41	87
42	88
43	89
44	90
45	92
46	94
47	97
48	100
49	104
50	105
51	106
52	107
53	110
54	112
55	113
56	115
57	116
58	118
59	119
60	123
61	130
62	132
63	137
64	138

n	a(n)
1	7
2	9
3	11
4	13
5	14
6	18
7	21
8	22
9	23
10	25
11	26
12	28
13	29
14	33
15	35
16	36
17	39
18	41
19	42
20	44
21	45
22	46
23	47
24	50
25	52
26	53
27	55
28	56
29	58
30	59
31	65
32	66
33	69
34	70
35	72
36	75
37	78
38	82
39	83
40	84
41	87
42	88
43	89
44	90
45	92
46	94
47	97
48	100
49	104
50	105
51	106
52	107
53	110
54	112
55	113
56	115
57	116
58	118
59	119
60	123
61	130
62	132
63	137
64	138

n	a(n)
1	7
2	9
3	11
4	13
5	14
6	18
7	21
8	22
9	23
10	25
11	26
12	28
13	29
14	33
15	35
16	36
17	39
18	41
19	42
20	44
21	45
22	46
23	47
24	50
25	52
26	53
27	55
28	56
29	58
30	59
31	65
32	66
33	69
34	70
35	72
36	75
37	78
38	82
39	83
40	84
41	87
42	88
43	89
44	90
45	92
46	94
47	97
48	100
49	104
50	105
51	106
52	107
53	110
54	112
55	113
56	115
57	116
58	118
59	119
60	123
61	130
62	132
63	137
64	138