A086526 - cp's OEIS frontend

A086526 Beginning with 2, the smallest even number not included earlier such that the arithmetic mean of a pair of successive terms is a prime.

n	a(n)
1	2
2	4
3	6
4	8
5	14
6	12
7	10
8	16
9	18
10	20
11	26
12	32
13	30
14	28
15	34
16	24
17	22
18	36
19	38
20	44
21	42
22	40
23	46
24	48
25	58
26	60
27	62
28	56
29	50
30	68
31	54
32	52
33	66
34	76
35	70
36	64
37	78
38	80
39	86
40	72
41	74
42	84
43	82
44	96
45	98
46	104
47	90
48	88
49	106
50	100
51	94
52	108
53	110
54	92
55	102
56	112
57	114
58	140
59	122
60	132
61	130
62	124
63	138
64	116
65	146
66	128

[2, 4, 6, 8, 14, 12, 10, 16, 18, 20, 26, 32, 30, 28, 34, 24, 22, 36, 38, 44, 42, 40, 46, 48, 58, 60, 62, 56, 50, 68, 54, 52, 66, 76, 70, 64, 78, 80, 86, 72, 74, 84, 82, 96, 98, 104, 90, 88, 106, 100, 94, 108, 110, 92, 102, 112, 114, 140, 122, 132, 130, 124, 138, 116, 146, 128]

cp's OEIS Frontend

A086526 Beginning with 2, the smallest even number not included earlier such that the arithmetic mean of a pair of successive terms is a prime.

Table of values

List of values

n	a(n)
1	2
2	4
3	6
4	8
5	14
6	12
7	10
8	16
9	18
10	20
11	26
12	32
13	30
14	28
15	34
16	24
17	22
18	36
19	38
20	44
21	42
22	40
23	46
24	48
25	58
26	60
27	62
28	56
29	50
30	68
31	54
32	52
33	66
34	76
35	70
36	64
37	78
38	80
39	86
40	72
41	74
42	84
43	82
44	96
45	98
46	104
47	90
48	88
49	106
50	100
51	94
52	108
53	110
54	92
55	102
56	112
57	114
58	140
59	122
60	132
61	130
62	124
63	138
64	116
65	146
66	128

n	a(n)
1	2
2	4
3	6
4	8
5	14
6	12
7	10
8	16
9	18
10	20
11	26
12	32
13	30
14	28
15	34
16	24
17	22
18	36
19	38
20	44
21	42
22	40
23	46
24	48
25	58
26	60
27	62
28	56
29	50
30	68
31	54
32	52
33	66
34	76
35	70
36	64
37	78
38	80
39	86
40	72
41	74
42	84
43	82
44	96
45	98
46	104
47	90
48	88
49	106
50	100
51	94
52	108
53	110
54	92
55	102
56	112
57	114
58	140
59	122
60	132
61	130
62	124
63	138
64	116
65	146
66	128

n	a(n)
1	2
2	4
3	6
4	8
5	14
6	12
7	10
8	16
9	18
10	20
11	26
12	32
13	30
14	28
15	34
16	24
17	22
18	36
19	38
20	44
21	42
22	40
23	46
24	48
25	58
26	60
27	62
28	56
29	50
30	68
31	54
32	52
33	66
34	76
35	70
36	64
37	78
38	80
39	86
40	72
41	74
42	84
43	82
44	96
45	98
46	104
47	90
48	88
49	106
50	100
51	94
52	108
53	110
54	92
55	102
56	112
57	114
58	140
59	122
60	132
61	130
62	124
63	138
64	116
65	146
66	128