A064427 - cp's OEIS frontend

A064427 a(n) = n + (number of primes < n).

n	a(n)
1	1
2	2
3	4
4	6
5	7
6	9
7	10
8	12
9	13
10	14
11	15
12	17
13	18
14	20
15	21
16	22
17	23
18	25
19	26
20	28
21	29
22	30
23	31
24	33
25	34
26	35
27	36
28	37
29	38
30	40
31	41
32	43
33	44
34	45
35	46
36	47
37	48
38	50
39	51
40	52
41	53
42	55
43	56
44	58
45	59
46	60
47	61
48	63
49	64
50	65
51	66
52	67
53	68
54	70
55	71
56	72
57	73
58	74
59	75
60	77
61	78
62	80
63	81
64	82

[1, 2, 4, 6, 7, 9, 10, 12, 13, 14, 15, 17, 18, 20, 21, 22, 23, 25, 26, 28, 29, 30, 31, 33, 34, 35, 36, 37, 38, 40, 41, 43, 44, 45, 46, 47, 48, 50, 51, 52, 53, 55, 56, 58, 59, 60, 61, 63, 64, 65, 66, 67, 68, 70, 71, 72, 73, 74, 75, 77, 78, 80, 81, 82]

cp's OEIS Frontend

A064427 a(n) = n + (number of primes < n).

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	6
5	7
6	9
7	10
8	12
9	13
10	14
11	15
12	17
13	18
14	20
15	21
16	22
17	23
18	25
19	26
20	28
21	29
22	30
23	31
24	33
25	34
26	35
27	36
28	37
29	38
30	40
31	41
32	43
33	44
34	45
35	46
36	47
37	48
38	50
39	51
40	52
41	53
42	55
43	56
44	58
45	59
46	60
47	61
48	63
49	64
50	65
51	66
52	67
53	68
54	70
55	71
56	72
57	73
58	74
59	75
60	77
61	78
62	80
63	81
64	82

n	a(n)
1	1
2	2
3	4
4	6
5	7
6	9
7	10
8	12
9	13
10	14
11	15
12	17
13	18
14	20
15	21
16	22
17	23
18	25
19	26
20	28
21	29
22	30
23	31
24	33
25	34
26	35
27	36
28	37
29	38
30	40
31	41
32	43
33	44
34	45
35	46
36	47
37	48
38	50
39	51
40	52
41	53
42	55
43	56
44	58
45	59
46	60
47	61
48	63
49	64
50	65
51	66
52	67
53	68
54	70
55	71
56	72
57	73
58	74
59	75
60	77
61	78
62	80
63	81
64	82

n	a(n)
1	1
2	2
3	4
4	6
5	7
6	9
7	10
8	12
9	13
10	14
11	15
12	17
13	18
14	20
15	21
16	22
17	23
18	25
19	26
20	28
21	29
22	30
23	31
24	33
25	34
26	35
27	36
28	37
29	38
30	40
31	41
32	43
33	44
34	45
35	46
36	47
37	48
38	50
39	51
40	52
41	53
42	55
43	56
44	58
45	59
46	60
47	61
48	63
49	64
50	65
51	66
52	67
53	68
54	70
55	71
56	72
57	73
58	74
59	75
60	77
61	78
62	80
63	81
64	82