A269131 - cp's OEIS frontend

A269131 Composite numbers whose largest prime factor is less than its second-largest prime factor's square, counting with multiplicity so that the factors of 18 are 2, 3, 3.

n	a(n)
1	4
2	6
3	8
4	9
5	12
6	15
7	16
8	18
9	21
10	24
11	25
12	27
13	30
14	32
15	35
16	36
17	42
18	45
19	48
20	49
21	50
22	54
23	55
24	60
25	63
26	64
27	65
28	70
29	72
30	75
31	77
32	81
33	84
34	85
35	90
36	91
37	95
38	96
39	98
40	100
41	105
42	108
43	110
44	115
45	119
46	120
47	121
48	125
49	126
50	128
51	130
52	133
53	135
54	140
55	143
56	144
57	147
58	150
59	154
60	161
61	162
62	165

[4, 6, 8, 9, 12, 15, 16, 18, 21, 24, 25, 27, 30, 32, 35, 36, 42, 45, 48, 49, 50, 54, 55, 60, 63, 64, 65, 70, 72, 75, 77, 81, 84, 85, 90, 91, 95, 96, 98, 100, 105, 108, 110, 115, 119, 120, 121, 125, 126, 128, 130, 133, 135, 140, 143, 144, 147, 150, 154, 161, 162, 165]

cp's OEIS Frontend

A269131 Composite numbers whose largest prime factor is less than its second-largest prime factor's square, counting with multiplicity so that the factors of 18 are 2, 3, 3.

Table of values

List of values

n	a(n)
1	4
2	6
3	8
4	9
5	12
6	15
7	16
8	18
9	21
10	24
11	25
12	27
13	30
14	32
15	35
16	36
17	42
18	45
19	48
20	49
21	50
22	54
23	55
24	60
25	63
26	64
27	65
28	70
29	72
30	75
31	77
32	81
33	84
34	85
35	90
36	91
37	95
38	96
39	98
40	100
41	105
42	108
43	110
44	115
45	119
46	120
47	121
48	125
49	126
50	128
51	130
52	133
53	135
54	140
55	143
56	144
57	147
58	150
59	154
60	161
61	162
62	165

n	a(n)
1	4
2	6
3	8
4	9
5	12
6	15
7	16
8	18
9	21
10	24
11	25
12	27
13	30
14	32
15	35
16	36
17	42
18	45
19	48
20	49
21	50
22	54
23	55
24	60
25	63
26	64
27	65
28	70
29	72
30	75
31	77
32	81
33	84
34	85
35	90
36	91
37	95
38	96
39	98
40	100
41	105
42	108
43	110
44	115
45	119
46	120
47	121
48	125
49	126
50	128
51	130
52	133
53	135
54	140
55	143
56	144
57	147
58	150
59	154
60	161
61	162
62	165

n	a(n)
1	4
2	6
3	8
4	9
5	12
6	15
7	16
8	18
9	21
10	24
11	25
12	27
13	30
14	32
15	35
16	36
17	42
18	45
19	48
20	49
21	50
22	54
23	55
24	60
25	63
26	64
27	65
28	70
29	72
30	75
31	77
32	81
33	84
34	85
35	90
36	91
37	95
38	96
39	98
40	100
41	105
42	108
43	110
44	115
45	119
46	120
47	121
48	125
49	126
50	128
51	130
52	133
53	135
54	140
55	143
56	144
57	147
58	150
59	154
60	161
61	162
62	165