A007950 - cp's OEIS frontend

A007950 Binary sieve: delete every 2nd number, then every 4th, 8th, etc.

n	a(n)
1	1
2	3
3	5
4	9
5	11
6	13
7	17
8	21
9	25
10	27
11	29
12	33
13	35
14	37
15	43
16	49
17	51
18	53
19	57
20	59
21	65
22	67
23	69
24	73
25	75
26	77
27	81
28	85
29	89
30	91
31	97
32	101
33	107
34	109
35	113
36	115
37	117
38	121
39	123
40	129
41	131
42	133
43	137
44	139
45	145
46	149
47	153
48	155
49	157
50	161
51	163
52	165
53	171
54	173
55	177
56	179
57	181
58	185
59	187
60	195
61	197

[1, 3, 5, 9, 11, 13, 17, 21, 25, 27, 29, 33, 35, 37, 43, 49, 51, 53, 57, 59, 65, 67, 69, 73, 75, 77, 81, 85, 89, 91, 97, 101, 107, 109, 113, 115, 117, 121, 123, 129, 131, 133, 137, 139, 145, 149, 153, 155, 157, 161, 163, 165, 171, 173, 177, 179, 181, 185, 187, 195, 197]

cp's OEIS Frontend

A007950 Binary sieve: delete every 2nd number, then every 4th, 8th, etc.

Table of values

List of values

n	a(n)
1	1
2	3
3	5
4	9
5	11
6	13
7	17
8	21
9	25
10	27
11	29
12	33
13	35
14	37
15	43
16	49
17	51
18	53
19	57
20	59
21	65
22	67
23	69
24	73
25	75
26	77
27	81
28	85
29	89
30	91
31	97
32	101
33	107
34	109
35	113
36	115
37	117
38	121
39	123
40	129
41	131
42	133
43	137
44	139
45	145
46	149
47	153
48	155
49	157
50	161
51	163
52	165
53	171
54	173
55	177
56	179
57	181
58	185
59	187
60	195
61	197

n	a(n)
1	1
2	3
3	5
4	9
5	11
6	13
7	17
8	21
9	25
10	27
11	29
12	33
13	35
14	37
15	43
16	49
17	51
18	53
19	57
20	59
21	65
22	67
23	69
24	73
25	75
26	77
27	81
28	85
29	89
30	91
31	97
32	101
33	107
34	109
35	113
36	115
37	117
38	121
39	123
40	129
41	131
42	133
43	137
44	139
45	145
46	149
47	153
48	155
49	157
50	161
51	163
52	165
53	171
54	173
55	177
56	179
57	181
58	185
59	187
60	195
61	197

n	a(n)
1	1
2	3
3	5
4	9
5	11
6	13
7	17
8	21
9	25
10	27
11	29
12	33
13	35
14	37
15	43
16	49
17	51
18	53
19	57
20	59
21	65
22	67
23	69
24	73
25	75
26	77
27	81
28	85
29	89
30	91
31	97
32	101
33	107
34	109
35	113
36	115
37	117
38	121
39	123
40	129
41	131
42	133
43	137
44	139
45	145
46	149
47	153
48	155
49	157
50	161
51	163
52	165
53	171
54	173
55	177
56	179
57	181
58	185
59	187
60	195
61	197