A065305 - cp's OEIS frontend

A065305 Triangular array giving means of two odd primes: T(n,k) = (n-th prime + k-th prime)/2, n >= k >= 2.

n	a(n)
2	3
3	4
4	5
5	5
6	6
7	7
8	7
9	8
10	9
11	11
12	8
13	9
14	10
15	12
16	13
17	10
18	11
19	12
20	14
21	15
22	17
23	11
24	12
25	13
26	15
27	16
28	18
29	19
30	13
31	14
32	15
33	17
34	18
35	20
36	21
37	23
38	16
39	17
40	18
41	20
42	21
43	23
44	24
45	26
46	29
47	17
48	18
49	19
50	21
51	22
52	24
53	25
54	27
55	30
56	31
57	20
58	21
59	22
60	24
61	25
62	27
63	28
64	30
65	33
66	34
67	37
68	22
69	23
70	24
71	26
72	27
73	29
74	30

[3, 4, 5, 5, 6, 7, 7, 8, 9, 11, 8, 9, 10, 12, 13, 10, 11, 12, 14, 15, 17, 11, 12, 13, 15, 16, 18, 19, 13, 14, 15, 17, 18, 20, 21, 23, 16, 17, 18, 20, 21, 23, 24, 26, 29, 17, 18, 19, 21, 22, 24, 25, 27, 30, 31, 20, 21, 22, 24, 25, 27, 28, 30, 33, 34, 37, 22, 23, 24, 26, 27, 29, 30]

cp's OEIS Frontend

A065305 Triangular array giving means of two odd primes: T(n,k) = (n-th prime + k-th prime)/2, n >= k >= 2.

Table of values

List of values

n	a(n)
2	3
3	4
4	5
5	5
6	6
7	7
8	7
9	8
10	9
11	11
12	8
13	9
14	10
15	12
16	13
17	10
18	11
19	12
20	14
21	15
22	17
23	11
24	12
25	13
26	15
27	16
28	18
29	19
30	13
31	14
32	15
33	17
34	18
35	20
36	21
37	23
38	16
39	17
40	18
41	20
42	21
43	23
44	24
45	26
46	29
47	17
48	18
49	19
50	21
51	22
52	24
53	25
54	27
55	30
56	31
57	20
58	21
59	22
60	24
61	25
62	27
63	28
64	30
65	33
66	34
67	37
68	22
69	23
70	24
71	26
72	27
73	29
74	30

n	a(n)
2	3
3	4
4	5
5	5
6	6
7	7
8	7
9	8
10	9
11	11
12	8
13	9
14	10
15	12
16	13
17	10
18	11
19	12
20	14
21	15
22	17
23	11
24	12
25	13
26	15
27	16
28	18
29	19
30	13
31	14
32	15
33	17
34	18
35	20
36	21
37	23
38	16
39	17
40	18
41	20
42	21
43	23
44	24
45	26
46	29
47	17
48	18
49	19
50	21
51	22
52	24
53	25
54	27
55	30
56	31
57	20
58	21
59	22
60	24
61	25
62	27
63	28
64	30
65	33
66	34
67	37
68	22
69	23
70	24
71	26
72	27
73	29
74	30

n	a(n)
2	3
3	4
4	5
5	5
6	6
7	7
8	7
9	8
10	9
11	11
12	8
13	9
14	10
15	12
16	13
17	10
18	11
19	12
20	14
21	15
22	17
23	11
24	12
25	13
26	15
27	16
28	18
29	19
30	13
31	14
32	15
33	17
34	18
35	20
36	21
37	23
38	16
39	17
40	18
41	20
42	21
43	23
44	24
45	26
46	29
47	17
48	18
49	19
50	21
51	22
52	24
53	25
54	27
55	30
56	31
57	20
58	21
59	22
60	24
61	25
62	27
63	28
64	30
65	33
66	34
67	37
68	22
69	23
70	24
71	26
72	27
73	29
74	30