A030231 - cp's OEIS frontend

A030231 Numbers with an even number of distinct prime factors.

n	a(n)
1	1
2	6
3	10
4	12
5	14
6	15
7	18
8	20
9	21
10	22
11	24
12	26
13	28
14	33
15	34
16	35
17	36
18	38
19	39
20	40
21	44
22	45
23	46
24	48
25	50
26	51
27	52
28	54
29	55
30	56
31	57
32	58
33	62
34	63
35	65
36	68
37	69
38	72
39	74
40	75
41	76
42	77
43	80
44	82
45	85
46	86
47	87
48	88
49	91
50	92
51	93
52	94
53	95
54	96
55	98
56	99
57	100
58	104
59	106
60	108
61	111
62	112
63	115
64	116
65	117
66	118
67	119

[1, 6, 10, 12, 14, 15, 18, 20, 21, 22, 24, 26, 28, 33, 34, 35, 36, 38, 39, 40, 44, 45, 46, 48, 50, 51, 52, 54, 55, 56, 57, 58, 62, 63, 65, 68, 69, 72, 74, 75, 76, 77, 80, 82, 85, 86, 87, 88, 91, 92, 93, 94, 95, 96, 98, 99, 100, 104, 106, 108, 111, 112, 115, 116, 117, 118, 119]

cp's OEIS Frontend

A030231 Numbers with an even number of distinct prime factors.

Table of values

List of values

n	a(n)
1	1
2	6
3	10
4	12
5	14
6	15
7	18
8	20
9	21
10	22
11	24
12	26
13	28
14	33
15	34
16	35
17	36
18	38
19	39
20	40
21	44
22	45
23	46
24	48
25	50
26	51
27	52
28	54
29	55
30	56
31	57
32	58
33	62
34	63
35	65
36	68
37	69
38	72
39	74
40	75
41	76
42	77
43	80
44	82
45	85
46	86
47	87
48	88
49	91
50	92
51	93
52	94
53	95
54	96
55	98
56	99
57	100
58	104
59	106
60	108
61	111
62	112
63	115
64	116
65	117
66	118
67	119

n	a(n)
1	1
2	6
3	10
4	12
5	14
6	15
7	18
8	20
9	21
10	22
11	24
12	26
13	28
14	33
15	34
16	35
17	36
18	38
19	39
20	40
21	44
22	45
23	46
24	48
25	50
26	51
27	52
28	54
29	55
30	56
31	57
32	58
33	62
34	63
35	65
36	68
37	69
38	72
39	74
40	75
41	76
42	77
43	80
44	82
45	85
46	86
47	87
48	88
49	91
50	92
51	93
52	94
53	95
54	96
55	98
56	99
57	100
58	104
59	106
60	108
61	111
62	112
63	115
64	116
65	117
66	118
67	119

n	a(n)
1	1
2	6
3	10
4	12
5	14
6	15
7	18
8	20
9	21
10	22
11	24
12	26
13	28
14	33
15	34
16	35
17	36
18	38
19	39
20	40
21	44
22	45
23	46
24	48
25	50
26	51
27	52
28	54
29	55
30	56
31	57
32	58
33	62
34	63
35	65
36	68
37	69
38	72
39	74
40	75
41	76
42	77
43	80
44	82
45	85
46	86
47	87
48	88
49	91
50	92
51	93
52	94
53	95
54	96
55	98
56	99
57	100
58	104
59	106
60	108
61	111
62	112
63	115
64	116
65	117
66	118
67	119