A258934 - cp's OEIS frontend

A258934 Half the difference between the 2n-th prime and the n-th prime, starting from n=2.

n	a(n)
2	2
3	4
4	6
5	9
6	12
7	13
8	17
9	19
10	21
11	24
12	26
13	30
14	32
15	33
16	39
17	40
18	45
19	48
20	51
21	54
22	57
23	58
24	67
25	66
26	69
27	74
28	78
29	81
30	84
31	83
32	90
33	90
34	99
35	100
36	104
37	108
38	110
39	115
40	118
41	121
42	126
43	126
44	132
45	133
46	140
47	140
48	140
49	147
50	156
51	162
52	165
53	168
54	171
55	172
56	175
57	175
58	185
59	185
60	189

[2, 4, 6, 9, 12, 13, 17, 19, 21, 24, 26, 30, 32, 33, 39, 40, 45, 48, 51, 54, 57, 58, 67, 66, 69, 74, 78, 81, 84, 83, 90, 90, 99, 100, 104, 108, 110, 115, 118, 121, 126, 126, 132, 133, 140, 140, 140, 147, 156, 162, 165, 168, 171, 172, 175, 175, 185, 185, 189]

cp's OEIS Frontend

A258934 Half the difference between the 2n-th prime and the n-th prime, starting from n=2.

Table of values

List of values

n	a(n)
2	2
3	4
4	6
5	9
6	12
7	13
8	17
9	19
10	21
11	24
12	26
13	30
14	32
15	33
16	39
17	40
18	45
19	48
20	51
21	54
22	57
23	58
24	67
25	66
26	69
27	74
28	78
29	81
30	84
31	83
32	90
33	90
34	99
35	100
36	104
37	108
38	110
39	115
40	118
41	121
42	126
43	126
44	132
45	133
46	140
47	140
48	140
49	147
50	156
51	162
52	165
53	168
54	171
55	172
56	175
57	175
58	185
59	185
60	189

n	a(n)
2	2
3	4
4	6
5	9
6	12
7	13
8	17
9	19
10	21
11	24
12	26
13	30
14	32
15	33
16	39
17	40
18	45
19	48
20	51
21	54
22	57
23	58
24	67
25	66
26	69
27	74
28	78
29	81
30	84
31	83
32	90
33	90
34	99
35	100
36	104
37	108
38	110
39	115
40	118
41	121
42	126
43	126
44	132
45	133
46	140
47	140
48	140
49	147
50	156
51	162
52	165
53	168
54	171
55	172
56	175
57	175
58	185
59	185
60	189

n	a(n)
2	2
3	4
4	6
5	9
6	12
7	13
8	17
9	19
10	21
11	24
12	26
13	30
14	32
15	33
16	39
17	40
18	45
19	48
20	51
21	54
22	57
23	58
24	67
25	66
26	69
27	74
28	78
29	81
30	84
31	83
32	90
33	90
34	99
35	100
36	104
37	108
38	110
39	115
40	118
41	121
42	126
43	126
44	132
45	133
46	140
47	140
48	140
49	147
50	156
51	162
52	165
53	168
54	171
55	172
56	175
57	175
58	185
59	185
60	189