A074851 - cp's OEIS frontend

A074851 Numbers k such that k and k+1 both have exactly 2 distinct prime factors.

n	a(n)
1	14
2	20
3	21
4	33
5	34
6	35
7	38
8	39
9	44
10	45
11	50
12	51
13	54
14	55
15	56
16	57
17	62
18	68
19	74
20	75
21	76
22	85
23	86
24	87
25	91
26	92
27	93
28	94
29	95
30	98
31	99
32	111
33	115
34	116
35	117
36	118
37	122
38	123
39	133
40	134
41	135
42	141
43	142
44	143
45	144
46	145
47	146
48	147
49	152
50	158
51	159
52	160
53	161
54	171
55	175
56	176
57	177
58	183
59	184

[14, 20, 21, 33, 34, 35, 38, 39, 44, 45, 50, 51, 54, 55, 56, 57, 62, 68, 74, 75, 76, 85, 86, 87, 91, 92, 93, 94, 95, 98, 99, 111, 115, 116, 117, 118, 122, 123, 133, 134, 135, 141, 142, 143, 144, 145, 146, 147, 152, 158, 159, 160, 161, 171, 175, 176, 177, 183, 184]

cp's OEIS Frontend

A074851 Numbers k such that k and k+1 both have exactly 2 distinct prime factors.

Table of values

List of values

n	a(n)
1	14
2	20
3	21
4	33
5	34
6	35
7	38
8	39
9	44
10	45
11	50
12	51
13	54
14	55
15	56
16	57
17	62
18	68
19	74
20	75
21	76
22	85
23	86
24	87
25	91
26	92
27	93
28	94
29	95
30	98
31	99
32	111
33	115
34	116
35	117
36	118
37	122
38	123
39	133
40	134
41	135
42	141
43	142
44	143
45	144
46	145
47	146
48	147
49	152
50	158
51	159
52	160
53	161
54	171
55	175
56	176
57	177
58	183
59	184

n	a(n)
1	14
2	20
3	21
4	33
5	34
6	35
7	38
8	39
9	44
10	45
11	50
12	51
13	54
14	55
15	56
16	57
17	62
18	68
19	74
20	75
21	76
22	85
23	86
24	87
25	91
26	92
27	93
28	94
29	95
30	98
31	99
32	111
33	115
34	116
35	117
36	118
37	122
38	123
39	133
40	134
41	135
42	141
43	142
44	143
45	144
46	145
47	146
48	147
49	152
50	158
51	159
52	160
53	161
54	171
55	175
56	176
57	177
58	183
59	184

n	a(n)
1	14
2	20
3	21
4	33
5	34
6	35
7	38
8	39
9	44
10	45
11	50
12	51
13	54
14	55
15	56
16	57
17	62
18	68
19	74
20	75
21	76
22	85
23	86
24	87
25	91
26	92
27	93
28	94
29	95
30	98
31	99
32	111
33	115
34	116
35	117
36	118
37	122
38	123
39	133
40	134
41	135
42	141
43	142
44	143
45	144
46	145
47	146
48	147
49	152
50	158
51	159
52	160
53	161
54	171
55	175
56	176
57	177
58	183
59	184