A156657 - cp's OEIS frontend

A156657 Numbers that are not safe primes.

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	6
7	8
8	9
9	10
10	12
11	13
12	14
13	15
14	16
15	17
16	18
17	19
18	20
19	21
20	22
21	24
22	25
23	26
24	27
25	28
26	29
27	30
28	31
29	32
30	33
31	34
32	35
33	36
34	37
35	38
36	39
37	40
38	41
39	42
40	43
41	44
42	45
43	46
44	48
45	49
46	50
47	51
48	52
49	53
50	54
51	55
52	56
53	57
54	58
55	60
56	61
57	62
58	63
59	64
60	65
61	66
62	67
63	68
64	69
65	70
66	71
67	72
68	73
69	74
70	75
71	76
72	77

[0, 1, 2, 3, 4, 6, 8, 9, 10, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77]

cp's OEIS Frontend

A156657 Numbers that are not safe primes.

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	6
7	8
8	9
9	10
10	12
11	13
12	14
13	15
14	16
15	17
16	18
17	19
18	20
19	21
20	22
21	24
22	25
23	26
24	27
25	28
26	29
27	30
28	31
29	32
30	33
31	34
32	35
33	36
34	37
35	38
36	39
37	40
38	41
39	42
40	43
41	44
42	45
43	46
44	48
45	49
46	50
47	51
48	52
49	53
50	54
51	55
52	56
53	57
54	58
55	60
56	61
57	62
58	63
59	64
60	65
61	66
62	67
63	68
64	69
65	70
66	71
67	72
68	73
69	74
70	75
71	76
72	77

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	6
7	8
8	9
9	10
10	12
11	13
12	14
13	15
14	16
15	17
16	18
17	19
18	20
19	21
20	22
21	24
22	25
23	26
24	27
25	28
26	29
27	30
28	31
29	32
30	33
31	34
32	35
33	36
34	37
35	38
36	39
37	40
38	41
39	42
40	43
41	44
42	45
43	46
44	48
45	49
46	50
47	51
48	52
49	53
50	54
51	55
52	56
53	57
54	58
55	60
56	61
57	62
58	63
59	64
60	65
61	66
62	67
63	68
64	69
65	70
66	71
67	72
68	73
69	74
70	75
71	76
72	77

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	6
7	8
8	9
9	10
10	12
11	13
12	14
13	15
14	16
15	17
16	18
17	19
18	20
19	21
20	22
21	24
22	25
23	26
24	27
25	28
26	29
27	30
28	31
29	32
30	33
31	34
32	35
33	36
34	37
35	38
36	39
37	40
38	41
39	42
40	43
41	44
42	45
43	46
44	48
45	49
46	50
47	51
48	52
49	53
50	54
51	55
52	56
53	57
54	58
55	60
56	61
57	62
58	63
59	64
60	65
61	66
62	67
63	68
64	69
65	70
66	71
67	72
68	73
69	74
70	75
71	76
72	77