A153309 - cp's OEIS frontend

A153309 Numbers k such that 3*k + 1 is not prime.

n	a(n)
1	0
2	1
3	3
4	5
5	7
6	8
7	9
8	11
9	13
10	15
11	16
12	17
13	18
14	19
15	21
16	23
17	25
18	27
19	28
20	29
21	30
22	31
23	33
24	35
25	37
26	38
27	39
28	40
29	41
30	43
31	44
32	45
33	47
34	48
35	49
36	51
37	53
38	55
39	56
40	57
41	58
42	59
43	61
44	62
45	63
46	65
47	67
48	68
49	69
50	71
51	72
52	73
53	75
54	77
55	78
56	79
57	81
58	82
59	83
60	84
61	85
62	86
63	87
64	88
65	89
66	91
67	93
68	95

[0, 1, 3, 5, 7, 8, 9, 11, 13, 15, 16, 17, 18, 19, 21, 23, 25, 27, 28, 29, 30, 31, 33, 35, 37, 38, 39, 40, 41, 43, 44, 45, 47, 48, 49, 51, 53, 55, 56, 57, 58, 59, 61, 62, 63, 65, 67, 68, 69, 71, 72, 73, 75, 77, 78, 79, 81, 82, 83, 84, 85, 86, 87, 88, 89, 91, 93, 95]

cp's OEIS Frontend

A153309 Numbers k such that 3*k + 1 is not prime.

Table of values

List of values

n	a(n)
1	0
2	1
3	3
4	5
5	7
6	8
7	9
8	11
9	13
10	15
11	16
12	17
13	18
14	19
15	21
16	23
17	25
18	27
19	28
20	29
21	30
22	31
23	33
24	35
25	37
26	38
27	39
28	40
29	41
30	43
31	44
32	45
33	47
34	48
35	49
36	51
37	53
38	55
39	56
40	57
41	58
42	59
43	61
44	62
45	63
46	65
47	67
48	68
49	69
50	71
51	72
52	73
53	75
54	77
55	78
56	79
57	81
58	82
59	83
60	84
61	85
62	86
63	87
64	88
65	89
66	91
67	93
68	95

n	a(n)
1	0
2	1
3	3
4	5
5	7
6	8
7	9
8	11
9	13
10	15
11	16
12	17
13	18
14	19
15	21
16	23
17	25
18	27
19	28
20	29
21	30
22	31
23	33
24	35
25	37
26	38
27	39
28	40
29	41
30	43
31	44
32	45
33	47
34	48
35	49
36	51
37	53
38	55
39	56
40	57
41	58
42	59
43	61
44	62
45	63
46	65
47	67
48	68
49	69
50	71
51	72
52	73
53	75
54	77
55	78
56	79
57	81
58	82
59	83
60	84
61	85
62	86
63	87
64	88
65	89
66	91
67	93
68	95

n	a(n)
1	0
2	1
3	3
4	5
5	7
6	8
7	9
8	11
9	13
10	15
11	16
12	17
13	18
14	19
15	21
16	23
17	25
18	27
19	28
20	29
21	30
22	31
23	33
24	35
25	37
26	38
27	39
28	40
29	41
30	43
31	44
32	45
33	47
34	48
35	49
36	51
37	53
38	55
39	56
40	57
41	58
42	59
43	61
44	62
45	63
46	65
47	67
48	68
49	69
50	71
51	72
52	73
53	75
54	77
55	78
56	79
57	81
58	82
59	83
60	84
61	85
62	86
63	87
64	88
65	89
66	91
67	93
68	95