A033597 - cp's OEIS frontend

A033597 (nextprime(n)+prevprime(n))/2.

n	a(n)
4	4
5	5
6	6
7	8
8	9
9	9
10	9
11	10
12	12
13	14
14	15
15	15
16	15
17	16
18	18
19	20
20	21
21	21
22	21
23	24
24	26
25	26
26	26
27	26
28	26
29	27
30	30
31	33
32	34
33	34
34	34
35	34
36	34
37	36
38	39
39	39
40	39
41	40
42	42
43	44
44	45
45	45
46	45
47	48
48	50
49	50
50	50
51	50
52	50
53	53
54	56
55	56
56	56
57	56
58	56
59	57
60	60

[4, 5, 6, 8, 9, 9, 9, 10, 12, 14, 15, 15, 15, 16, 18, 20, 21, 21, 21, 24, 26, 26, 26, 26, 26, 27, 30, 33, 34, 34, 34, 34, 34, 36, 39, 39, 39, 40, 42, 44, 45, 45, 45, 48, 50, 50, 50, 50, 50, 53, 56, 56, 56, 56, 56, 57, 60]

cp's OEIS Frontend

A033597 (nextprime(n)+prevprime(n))/2.

Table of values

List of values

n	a(n)
4	4
5	5
6	6
7	8
8	9
9	9
10	9
11	10
12	12
13	14
14	15
15	15
16	15
17	16
18	18
19	20
20	21
21	21
22	21
23	24
24	26
25	26
26	26
27	26
28	26
29	27
30	30
31	33
32	34
33	34
34	34
35	34
36	34
37	36
38	39
39	39
40	39
41	40
42	42
43	44
44	45
45	45
46	45
47	48
48	50
49	50
50	50
51	50
52	50
53	53
54	56
55	56
56	56
57	56
58	56
59	57
60	60

n	a(n)
4	4
5	5
6	6
7	8
8	9
9	9
10	9
11	10
12	12
13	14
14	15
15	15
16	15
17	16
18	18
19	20
20	21
21	21
22	21
23	24
24	26
25	26
26	26
27	26
28	26
29	27
30	30
31	33
32	34
33	34
34	34
35	34
36	34
37	36
38	39
39	39
40	39
41	40
42	42
43	44
44	45
45	45
46	45
47	48
48	50
49	50
50	50
51	50
52	50
53	53
54	56
55	56
56	56
57	56
58	56
59	57
60	60

n	a(n)
4	4
5	5
6	6
7	8
8	9
9	9
10	9
11	10
12	12
13	14
14	15
15	15
16	15
17	16
18	18
19	20
20	21
21	21
22	21
23	24
24	26
25	26
26	26
27	26
28	26
29	27
30	30
31	33
32	34
33	34
34	34
35	34
36	34
37	36
38	39
39	39
40	39
41	40
42	42
43	44
44	45
45	45
46	45
47	48
48	50
49	50
50	50
51	50
52	50
53	53
54	56
55	56
56	56
57	56
58	56
59	57
60	60