A028260 - cp's OEIS frontend

A028260 Numbers with an even number of prime divisors (counted with multiplicity); numbers k such that the Liouville function lambda(k) (A008836) is positive.

n	a(n)
1	1
2	4
3	6
4	9
5	10
6	14
7	15
8	16
9	21
10	22
11	24
12	25
13	26
14	33
15	34
16	35
17	36
18	38
19	39
20	40
21	46
22	49
23	51
24	54
25	55
26	56
27	57
28	58
29	60
30	62
31	64
32	65
33	69
34	74
35	77
36	81
37	82
38	84
39	85
40	86
41	87
42	88
43	90
44	91
45	93
46	94
47	95
48	96
49	100
50	104
51	106
52	111
53	115
54	118
55	119
56	121
57	122
58	123
59	126
60	129
61	132
62	133
63	134

[1, 4, 6, 9, 10, 14, 15, 16, 21, 22, 24, 25, 26, 33, 34, 35, 36, 38, 39, 40, 46, 49, 51, 54, 55, 56, 57, 58, 60, 62, 64, 65, 69, 74, 77, 81, 82, 84, 85, 86, 87, 88, 90, 91, 93, 94, 95, 96, 100, 104, 106, 111, 115, 118, 119, 121, 122, 123, 126, 129, 132, 133, 134]

cp's OEIS Frontend

A028260 Numbers with an even number of prime divisors (counted with multiplicity); numbers k such that the Liouville function lambda(k) (A008836) is positive.

Table of values

List of values

n	a(n)
1	1
2	4
3	6
4	9
5	10
6	14
7	15
8	16
9	21
10	22
11	24
12	25
13	26
14	33
15	34
16	35
17	36
18	38
19	39
20	40
21	46
22	49
23	51
24	54
25	55
26	56
27	57
28	58
29	60
30	62
31	64
32	65
33	69
34	74
35	77
36	81
37	82
38	84
39	85
40	86
41	87
42	88
43	90
44	91
45	93
46	94
47	95
48	96
49	100
50	104
51	106
52	111
53	115
54	118
55	119
56	121
57	122
58	123
59	126
60	129
61	132
62	133
63	134

n	a(n)
1	1
2	4
3	6
4	9
5	10
6	14
7	15
8	16
9	21
10	22
11	24
12	25
13	26
14	33
15	34
16	35
17	36
18	38
19	39
20	40
21	46
22	49
23	51
24	54
25	55
26	56
27	57
28	58
29	60
30	62
31	64
32	65
33	69
34	74
35	77
36	81
37	82
38	84
39	85
40	86
41	87
42	88
43	90
44	91
45	93
46	94
47	95
48	96
49	100
50	104
51	106
52	111
53	115
54	118
55	119
56	121
57	122
58	123
59	126
60	129
61	132
62	133
63	134

n	a(n)
1	1
2	4
3	6
4	9
5	10
6	14
7	15
8	16
9	21
10	22
11	24
12	25
13	26
14	33
15	34
16	35
17	36
18	38
19	39
20	40
21	46
22	49
23	51
24	54
25	55
26	56
27	57
28	58
29	60
30	62
31	64
32	65
33	69
34	74
35	77
36	81
37	82
38	84
39	85
40	86
41	87
42	88
43	90
44	91
45	93
46	94
47	95
48	96
49	100
50	104
51	106
52	111
53	115
54	118
55	119
56	121
57	122
58	123
59	126
60	129
61	132
62	133
63	134