A137428 - cp's OEIS frontend

A137428 Positive integers n which have a composite divisor smaller than their largest prime factor.

n	a(n)
1	20
2	28
3	40
4	42
5	44
6	52
7	56
8	60
9	66
10	68
11	76
12	78
13	80
14	84
15	88
16	92
17	99
18	100
19	102
20	104
21	110
22	112
23	114
24	116
25	117
26	120
27	124
28	126
29	130
30	132
31	136
32	138
33	140
34	148
35	152
36	153
37	156
38	160
39	164
40	168
41	170
42	171
43	172
44	174
45	176
46	180
47	184
48	186
49	188
50	190
51	196
52	198
53	200
54	204
55	207
56	208

[20, 28, 40, 42, 44, 52, 56, 60, 66, 68, 76, 78, 80, 84, 88, 92, 99, 100, 102, 104, 110, 112, 114, 116, 117, 120, 124, 126, 130, 132, 136, 138, 140, 148, 152, 153, 156, 160, 164, 168, 170, 171, 172, 174, 176, 180, 184, 186, 188, 190, 196, 198, 200, 204, 207, 208]

cp's OEIS Frontend

A137428 Positive integers n which have a composite divisor smaller than their largest prime factor.

Table of values

List of values

n	a(n)
1	20
2	28
3	40
4	42
5	44
6	52
7	56
8	60
9	66
10	68
11	76
12	78
13	80
14	84
15	88
16	92
17	99
18	100
19	102
20	104
21	110
22	112
23	114
24	116
25	117
26	120
27	124
28	126
29	130
30	132
31	136
32	138
33	140
34	148
35	152
36	153
37	156
38	160
39	164
40	168
41	170
42	171
43	172
44	174
45	176
46	180
47	184
48	186
49	188
50	190
51	196
52	198
53	200
54	204
55	207
56	208

n	a(n)
1	20
2	28
3	40
4	42
5	44
6	52
7	56
8	60
9	66
10	68
11	76
12	78
13	80
14	84
15	88
16	92
17	99
18	100
19	102
20	104
21	110
22	112
23	114
24	116
25	117
26	120
27	124
28	126
29	130
30	132
31	136
32	138
33	140
34	148
35	152
36	153
37	156
38	160
39	164
40	168
41	170
42	171
43	172
44	174
45	176
46	180
47	184
48	186
49	188
50	190
51	196
52	198
53	200
54	204
55	207
56	208

n	a(n)
1	20
2	28
3	40
4	42
5	44
6	52
7	56
8	60
9	66
10	68
11	76
12	78
13	80
14	84
15	88
16	92
17	99
18	100
19	102
20	104
21	110
22	112
23	114
24	116
25	117
26	120
27	124
28	126
29	130
30	132
31	136
32	138
33	140
34	148
35	152
36	153
37	156
38	160
39	164
40	168
41	170
42	171
43	172
44	174
45	176
46	180
47	184
48	186
49	188
50	190
51	196
52	198
53	200
54	204
55	207
56	208