A024699 - cp's OEIS frontend

A024699 a(n) = (prime(n+2)-1)/6 if this is an integer or (prime(n+2)+ 1)/6 otherwise.

n	a(n)
1	1
2	1
3	2
4	2
5	3
6	3
7	4
8	5
9	5
10	6
11	7
12	7
13	8
14	9
15	10
16	10
17	11
18	12
19	12
20	13
21	14
22	15
23	16
24	17
25	17
26	18
27	18
28	19
29	21
30	22
31	23
32	23
33	25
34	25
35	26
36	27
37	28
38	29
39	30
40	30
41	32
42	32
43	33
44	33
45	35
46	37
47	38
48	38
49	39
50	40
51	40
52	42
53	43
54	44
55	45
56	45
57	46
58	47
59	47
60	49
61	51
62	52
63	52
64	53
65	55
66	56
67	58
68	58
69	59
70	60
71	61
72	62
73	63
74	64
75	65
76	66
77	67
78	68
79	70

[1, 1, 2, 2, 3, 3, 4, 5, 5, 6, 7, 7, 8, 9, 10, 10, 11, 12, 12, 13, 14, 15, 16, 17, 17, 18, 18, 19, 21, 22, 23, 23, 25, 25, 26, 27, 28, 29, 30, 30, 32, 32, 33, 33, 35, 37, 38, 38, 39, 40, 40, 42, 43, 44, 45, 45, 46, 47, 47, 49, 51, 52, 52, 53, 55, 56, 58, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 70]

cp's OEIS Frontend

A024699 a(n) = (prime(n+2)-1)/6 if this is an integer or (prime(n+2)+ 1)/6 otherwise.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	2
5	3
6	3
7	4
8	5
9	5
10	6
11	7
12	7
13	8
14	9
15	10
16	10
17	11
18	12
19	12
20	13
21	14
22	15
23	16
24	17
25	17
26	18
27	18
28	19
29	21
30	22
31	23
32	23
33	25
34	25
35	26
36	27
37	28
38	29
39	30
40	30
41	32
42	32
43	33
44	33
45	35
46	37
47	38
48	38
49	39
50	40
51	40
52	42
53	43
54	44
55	45
56	45
57	46
58	47
59	47
60	49
61	51
62	52
63	52
64	53
65	55
66	56
67	58
68	58
69	59
70	60
71	61
72	62
73	63
74	64
75	65
76	66
77	67
78	68
79	70

n	a(n)
1	1
2	1
3	2
4	2
5	3
6	3
7	4
8	5
9	5
10	6
11	7
12	7
13	8
14	9
15	10
16	10
17	11
18	12
19	12
20	13
21	14
22	15
23	16
24	17
25	17
26	18
27	18
28	19
29	21
30	22
31	23
32	23
33	25
34	25
35	26
36	27
37	28
38	29
39	30
40	30
41	32
42	32
43	33
44	33
45	35
46	37
47	38
48	38
49	39
50	40
51	40
52	42
53	43
54	44
55	45
56	45
57	46
58	47
59	47
60	49
61	51
62	52
63	52
64	53
65	55
66	56
67	58
68	58
69	59
70	60
71	61
72	62
73	63
74	64
75	65
76	66
77	67
78	68
79	70

n	a(n)
1	1
2	1
3	2
4	2
5	3
6	3
7	4
8	5
9	5
10	6
11	7
12	7
13	8
14	9
15	10
16	10
17	11
18	12
19	12
20	13
21	14
22	15
23	16
24	17
25	17
26	18
27	18
28	19
29	21
30	22
31	23
32	23
33	25
34	25
35	26
36	27
37	28
38	29
39	30
40	30
41	32
42	32
43	33
44	33
45	35
46	37
47	38
48	38
49	39
50	40
51	40
52	42
53	43
54	44
55	45
56	45
57	46
58	47
59	47
60	49
61	51
62	52
63	52
64	53
65	55
66	56
67	58
68	58
69	59
70	60
71	61
72	62
73	63
74	64
75	65
76	66
77	67
78	68
79	70