A147853 - cp's OEIS frontend

A147853 Least prime p such that there is a prime q with (p+q)/2=A002110(n), the n-th primorial.

n	a(n)
2	5
3	7
4	11
5	17
6	19
7	19
8	29
9	37
10	37
11	37
12	73
13	47
14	59
15	71
16	97
17	79
18	79
19	101
20	97
21	137
22	227
23	137
24	109
25	127
26	151
27	127
28	151
29	151
30	179
31	227
32	431
33	139
34	211
35	223
36	337
37	181
38	251
39	257
40	313
41	227
42	257
43	227
44	263
45	491
46	307
47	241
48	409
49	263
50	277

[5, 7, 11, 17, 19, 19, 29, 37, 37, 37, 73, 47, 59, 71, 97, 79, 79, 101, 97, 137, 227, 137, 109, 127, 151, 127, 151, 151, 179, 227, 431, 139, 211, 223, 337, 181, 251, 257, 313, 227, 257, 227, 263, 491, 307, 241, 409, 263, 277]

cp's OEIS Frontend

A147853 Least prime p such that there is a prime q with (p+q)/2=A002110(n), the n-th primorial.

Table of values

List of values

n	a(n)
2	5
3	7
4	11
5	17
6	19
7	19
8	29
9	37
10	37
11	37
12	73
13	47
14	59
15	71
16	97
17	79
18	79
19	101
20	97
21	137
22	227
23	137
24	109
25	127
26	151
27	127
28	151
29	151
30	179
31	227
32	431
33	139
34	211
35	223
36	337
37	181
38	251
39	257
40	313
41	227
42	257
43	227
44	263
45	491
46	307
47	241
48	409
49	263
50	277

n	a(n)
2	5
3	7
4	11
5	17
6	19
7	19
8	29
9	37
10	37
11	37
12	73
13	47
14	59
15	71
16	97
17	79
18	79
19	101
20	97
21	137
22	227
23	137
24	109
25	127
26	151
27	127
28	151
29	151
30	179
31	227
32	431
33	139
34	211
35	223
36	337
37	181
38	251
39	257
40	313
41	227
42	257
43	227
44	263
45	491
46	307
47	241
48	409
49	263
50	277

n	a(n)
2	5
3	7
4	11
5	17
6	19
7	19
8	29
9	37
10	37
11	37
12	73
13	47
14	59
15	71
16	97
17	79
18	79
19	101
20	97
21	137
22	227
23	137
24	109
25	127
26	151
27	127
28	151
29	151
30	179
31	227
32	431
33	139
34	211
35	223
36	337
37	181
38	251
39	257
40	313
41	227
42	257
43	227
44	263
45	491
46	307
47	241
48	409
49	263
50	277