A139636 - cp's OEIS frontend

A139636 If n = the k-th prime, then a(n) = the (k+1)th prime. If n = the k-th composite, then a(n) = the (k+1)th composite.

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

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

cp's OEIS Frontend

A139636 If n = the k-th prime, then a(n) = the (k+1)th prime. If n = the k-th composite, then a(n) = the (k+1)th composite.

Table of values

List of values

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

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

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