A085925 - cp's OEIS frontend

A085925 a(n) is taken to be the smallest positive integer greater than a(n-1) which is consistent with the condition "n is a member of the sequence if and only if a(n) is not prime".

n	a(n)
1	1
2	3
3	4
4	6
5	7
6	8
7	9
8	10
9	12
10	14
11	17
12	18
13	19
14	20
15	23
16	29
17	30
18	32
19	33
20	34
21	37
22	41
23	42
24	43
25	47
26	53
27	59
28	61
29	62
30	63
31	67
32	68
33	69
34	70
35	71
36	73
37	74
38	79
39	83
40	89
41	90
42	91
43	92
44	97
45	101
46	103
47	104
48	107
49	109
50	113
51	127
52	131
53	132
54	137
55	139
56	149
57	151
58	157
59	158
60	163
61	164
62	165
63	166
64	167
65	173

[1, 3, 4, 6, 7, 8, 9, 10, 12, 14, 17, 18, 19, 20, 23, 29, 30, 32, 33, 34, 37, 41, 42, 43, 47, 53, 59, 61, 62, 63, 67, 68, 69, 70, 71, 73, 74, 79, 83, 89, 90, 91, 92, 97, 101, 103, 104, 107, 109, 113, 127, 131, 132, 137, 139, 149, 151, 157, 158, 163, 164, 165, 166, 167, 173]

cp's OEIS Frontend

A085925 a(n) is taken to be the smallest positive integer greater than a(n-1) which is consistent with the condition "n is a member of the sequence if and only if a(n) is not prime".

Table of values

List of values

n	a(n)
1	1
2	3
3	4
4	6
5	7
6	8
7	9
8	10
9	12
10	14
11	17
12	18
13	19
14	20
15	23
16	29
17	30
18	32
19	33
20	34
21	37
22	41
23	42
24	43
25	47
26	53
27	59
28	61
29	62
30	63
31	67
32	68
33	69
34	70
35	71
36	73
37	74
38	79
39	83
40	89
41	90
42	91
43	92
44	97
45	101
46	103
47	104
48	107
49	109
50	113
51	127
52	131
53	132
54	137
55	139
56	149
57	151
58	157
59	158
60	163
61	164
62	165
63	166
64	167
65	173

n	a(n)
1	1
2	3
3	4
4	6
5	7
6	8
7	9
8	10
9	12
10	14
11	17
12	18
13	19
14	20
15	23
16	29
17	30
18	32
19	33
20	34
21	37
22	41
23	42
24	43
25	47
26	53
27	59
28	61
29	62
30	63
31	67
32	68
33	69
34	70
35	71
36	73
37	74
38	79
39	83
40	89
41	90
42	91
43	92
44	97
45	101
46	103
47	104
48	107
49	109
50	113
51	127
52	131
53	132
54	137
55	139
56	149
57	151
58	157
59	158
60	163
61	164
62	165
63	166
64	167
65	173

n	a(n)
1	1
2	3
3	4
4	6
5	7
6	8
7	9
8	10
9	12
10	14
11	17
12	18
13	19
14	20
15	23
16	29
17	30
18	32
19	33
20	34
21	37
22	41
23	42
24	43
25	47
26	53
27	59
28	61
29	62
30	63
31	67
32	68
33	69
34	70
35	71
36	73
37	74
38	79
39	83
40	89
41	90
42	91
43	92
44	97
45	101
46	103
47	104
48	107
49	109
50	113
51	127
52	131
53	132
54	137
55	139
56	149
57	151
58	157
59	158
60	163
61	164
62	165
63	166
64	167
65	173