A229993 - cp's OEIS frontend

A229993 Numbers for which c(n) - 1 and c(n) + 1 are twin primes, where c(n) = A061214(n) = product of composite numbers between prime(n) and prime(n+1) .

n	a(n)
2	2
3	3
4	5
5	6
6	7
7	8
8	10
9	13
10	14
11	17
12	20
13	26
14	28
15	29
16	33
17	35
18	41
19	43
20	45
21	49
22	52
23	57
24	60
25	64
26	69
27	81
28	83
29	85
30	89
31	90
32	91
33	98
34	104
35	109
36	113
37	116
38	120
39	134
40	140
41	142
42	144
43	148
44	152
45	171
46	173
47	176
48	178
49	182
50	190
51	201
52	202
53	204
54	206
55	209
56	212
57	215
58	225
59	230
60	234

[2, 3, 5, 6, 7, 8, 10, 13, 14, 17, 20, 26, 28, 29, 33, 35, 41, 43, 45, 49, 52, 57, 60, 64, 69, 81, 83, 85, 89, 90, 91, 98, 104, 109, 113, 116, 120, 134, 140, 142, 144, 148, 152, 171, 173, 176, 178, 182, 190, 201, 202, 204, 206, 209, 212, 215, 225, 230, 234]

cp's OEIS Frontend

A229993 Numbers for which c(n) - 1 and c(n) + 1 are twin primes, where c(n) = A061214(n) = product of composite numbers between prime(n) and prime(n+1) .

Table of values

List of values

n	a(n)
2	2
3	3
4	5
5	6
6	7
7	8
8	10
9	13
10	14
11	17
12	20
13	26
14	28
15	29
16	33
17	35
18	41
19	43
20	45
21	49
22	52
23	57
24	60
25	64
26	69
27	81
28	83
29	85
30	89
31	90
32	91
33	98
34	104
35	109
36	113
37	116
38	120
39	134
40	140
41	142
42	144
43	148
44	152
45	171
46	173
47	176
48	178
49	182
50	190
51	201
52	202
53	204
54	206
55	209
56	212
57	215
58	225
59	230
60	234

n	a(n)
2	2
3	3
4	5
5	6
6	7
7	8
8	10
9	13
10	14
11	17
12	20
13	26
14	28
15	29
16	33
17	35
18	41
19	43
20	45
21	49
22	52
23	57
24	60
25	64
26	69
27	81
28	83
29	85
30	89
31	90
32	91
33	98
34	104
35	109
36	113
37	116
38	120
39	134
40	140
41	142
42	144
43	148
44	152
45	171
46	173
47	176
48	178
49	182
50	190
51	201
52	202
53	204
54	206
55	209
56	212
57	215
58	225
59	230
60	234

n	a(n)
2	2
3	3
4	5
5	6
6	7
7	8
8	10
9	13
10	14
11	17
12	20
13	26
14	28
15	29
16	33
17	35
18	41
19	43
20	45
21	49
22	52
23	57
24	60
25	64
26	69
27	81
28	83
29	85
30	89
31	90
32	91
33	98
34	104
35	109
36	113
37	116
38	120
39	134
40	140
41	142
42	144
43	148
44	152
45	171
46	173
47	176
48	178
49	182
50	190
51	201
52	202
53	204
54	206
55	209
56	212
57	215
58	225
59	230
60	234