A279457 - cp's OEIS frontend

A279457 Numbers k such that number of distinct primes dividing k is odd and number of prime divisors (counted with multiplicity) of k is odd.

n	a(n)
1	2
2	3
3	5
4	7
5	8
6	11
7	13
8	17
9	19
10	23
11	27
12	29
13	30
14	31
15	32
16	37
17	41
18	42
19	43
20	47
21	53
22	59
23	61
24	66
25	67
26	70
27	71
28	73
29	78
30	79
31	83
32	89
33	97
34	101
35	102
36	103
37	105
38	107
39	109
40	110
41	113
42	114
43	120
44	125
45	127
46	128
47	130
48	131
49	137
50	138
51	139
52	149
53	151
54	154
55	157
56	163
57	165
58	167
59	168
60	170
61	173
62	174
63	179
64	180
65	181
66	182
67	186
68	190
69	191
70	193
71	195
72	197
73	199
74	211

[2, 3, 5, 7, 8, 11, 13, 17, 19, 23, 27, 29, 30, 31, 32, 37, 41, 42, 43, 47, 53, 59, 61, 66, 67, 70, 71, 73, 78, 79, 83, 89, 97, 101, 102, 103, 105, 107, 109, 110, 113, 114, 120, 125, 127, 128, 130, 131, 137, 138, 139, 149, 151, 154, 157, 163, 165, 167, 168, 170, 173, 174, 179, 180, 181, 182, 186, 190, 191, 193, 195, 197, 199, 211]

cp's OEIS Frontend

A279457 Numbers k such that number of distinct primes dividing k is odd and number of prime divisors (counted with multiplicity) of k is odd.

Table of values

List of values

n	a(n)
1	2
2	3
3	5
4	7
5	8
6	11
7	13
8	17
9	19
10	23
11	27
12	29
13	30
14	31
15	32
16	37
17	41
18	42
19	43
20	47
21	53
22	59
23	61
24	66
25	67
26	70
27	71
28	73
29	78
30	79
31	83
32	89
33	97
34	101
35	102
36	103
37	105
38	107
39	109
40	110
41	113
42	114
43	120
44	125
45	127
46	128
47	130
48	131
49	137
50	138
51	139
52	149
53	151
54	154
55	157
56	163
57	165
58	167
59	168
60	170
61	173
62	174
63	179
64	180
65	181
66	182
67	186
68	190
69	191
70	193
71	195
72	197
73	199
74	211

n	a(n)
1	2
2	3
3	5
4	7
5	8
6	11
7	13
8	17
9	19
10	23
11	27
12	29
13	30
14	31
15	32
16	37
17	41
18	42
19	43
20	47
21	53
22	59
23	61
24	66
25	67
26	70
27	71
28	73
29	78
30	79
31	83
32	89
33	97
34	101
35	102
36	103
37	105
38	107
39	109
40	110
41	113
42	114
43	120
44	125
45	127
46	128
47	130
48	131
49	137
50	138
51	139
52	149
53	151
54	154
55	157
56	163
57	165
58	167
59	168
60	170
61	173
62	174
63	179
64	180
65	181
66	182
67	186
68	190
69	191
70	193
71	195
72	197
73	199
74	211

n	a(n)
1	2
2	3
3	5
4	7
5	8
6	11
7	13
8	17
9	19
10	23
11	27
12	29
13	30
14	31
15	32
16	37
17	41
18	42
19	43
20	47
21	53
22	59
23	61
24	66
25	67
26	70
27	71
28	73
29	78
30	79
31	83
32	89
33	97
34	101
35	102
36	103
37	105
38	107
39	109
40	110
41	113
42	114
43	120
44	125
45	127
46	128
47	130
48	131
49	137
50	138
51	139
52	149
53	151
54	154
55	157
56	163
57	165
58	167
59	168
60	170
61	173
62	174
63	179
64	180
65	181
66	182
67	186
68	190
69	191
70	193
71	195
72	197
73	199
74	211