A280946 - cp's OEIS frontend

A280946 Numbers n such that n and number of proper divisors (A032741) of n are relatively prime and n is a nonprime (A018252).

n	a(n)
1	1
2	8
3	9
4	10
5	12
6	14
7	18
8	22
9	24
10	25
11	26
12	28
13	30
14	32
15	34
16	35
17	38
18	40
19	44
20	46
21	49
22	52
23	54
24	55
25	58
26	60
27	62
28	63
29	65
30	66
31	68
32	72
33	74
34	76
35	77
36	78
37	80
38	81
39	82
40	84
41	85
42	86
43	88
44	90
45	91
46	92
47	94
48	95
49	96
50	98
51	99
52	102
53	104
54	106
55	108
56	110
57	112
58	114
59	115
60	116
61	117
62	118
63	119
64	121
65	122
66	124
67	125
68	126
69	128
70	130
71	133
72	134
73	135
74	136
75	138

[1, 8, 9, 10, 12, 14, 18, 22, 24, 25, 26, 28, 30, 32, 34, 35, 38, 40, 44, 46, 49, 52, 54, 55, 58, 60, 62, 63, 65, 66, 68, 72, 74, 76, 77, 78, 80, 81, 82, 84, 85, 86, 88, 90, 91, 92, 94, 95, 96, 98, 99, 102, 104, 106, 108, 110, 112, 114, 115, 116, 117, 118, 119, 121, 122, 124, 125, 126, 128, 130, 133, 134, 135, 136, 138]

cp's OEIS Frontend

A280946 Numbers n such that n and number of proper divisors (A032741) of n are relatively prime and n is a nonprime (A018252).

Table of values

List of values

n	a(n)
1	1
2	8
3	9
4	10
5	12
6	14
7	18
8	22
9	24
10	25
11	26
12	28
13	30
14	32
15	34
16	35
17	38
18	40
19	44
20	46
21	49
22	52
23	54
24	55
25	58
26	60
27	62
28	63
29	65
30	66
31	68
32	72
33	74
34	76
35	77
36	78
37	80
38	81
39	82
40	84
41	85
42	86
43	88
44	90
45	91
46	92
47	94
48	95
49	96
50	98
51	99
52	102
53	104
54	106
55	108
56	110
57	112
58	114
59	115
60	116
61	117
62	118
63	119
64	121
65	122
66	124
67	125
68	126
69	128
70	130
71	133
72	134
73	135
74	136
75	138

n	a(n)
1	1
2	8
3	9
4	10
5	12
6	14
7	18
8	22
9	24
10	25
11	26
12	28
13	30
14	32
15	34
16	35
17	38
18	40
19	44
20	46
21	49
22	52
23	54
24	55
25	58
26	60
27	62
28	63
29	65
30	66
31	68
32	72
33	74
34	76
35	77
36	78
37	80
38	81
39	82
40	84
41	85
42	86
43	88
44	90
45	91
46	92
47	94
48	95
49	96
50	98
51	99
52	102
53	104
54	106
55	108
56	110
57	112
58	114
59	115
60	116
61	117
62	118
63	119
64	121
65	122
66	124
67	125
68	126
69	128
70	130
71	133
72	134
73	135
74	136
75	138

n	a(n)
1	1
2	8
3	9
4	10
5	12
6	14
7	18
8	22
9	24
10	25
11	26
12	28
13	30
14	32
15	34
16	35
17	38
18	40
19	44
20	46
21	49
22	52
23	54
24	55
25	58
26	60
27	62
28	63
29	65
30	66
31	68
32	72
33	74
34	76
35	77
36	78
37	80
38	81
39	82
40	84
41	85
42	86
43	88
44	90
45	91
46	92
47	94
48	95
49	96
50	98
51	99
52	102
53	104
54	106
55	108
56	110
57	112
58	114
59	115
60	116
61	117
62	118
63	119
64	121
65	122
66	124
67	125
68	126
69	128
70	130
71	133
72	134
73	135
74	136
75	138