A275669 - cp's OEIS frontend

A275669 Numbers k such that 3*k-1 is composite.

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

[3, 5, 7, 9, 11, 12, 13, 15, 17, 19, 21, 22, 23, 25, 26, 27, 29, 31, 32, 33, 35, 37, 39, 40, 41, 42, 43, 45, 47, 48, 49, 51, 52, 53, 54, 55, 57, 59, 61, 62, 63, 65, 67, 68, 69, 70, 71, 72, 73, 74, 75, 77, 79]

cp's OEIS Frontend

A275669 Numbers k such that 3*k-1 is composite.

Table of values

List of values

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

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

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