A056533 - cp's OEIS frontend

A056533 Even sieve: start with natural numbers, remove every 2nd term, remove every 4th term from what remains, remove every 6th term from what remains, etc.

n	a(n)
1	1
2	3
3	5
4	9
5	11
6	17
7	19
8	25
9	27
10	35
11	37
12	43
13	51
14	57
15	59
16	69
17	75
18	83
19	85
20	97
21	101
22	113
23	117
24	129
25	131
26	147
27	153
28	161
29	163
30	181
31	185
32	195
33	203
34	211
35	219
36	233
37	243
38	257
39	259
40	273
41	275
42	291
43	307
44	315
45	321
46	339
47	341
48	357
49	369
50	387
51	389
52	401
53	417
54	425
55	437
56	453
57	465

[1, 3, 5, 9, 11, 17, 19, 25, 27, 35, 37, 43, 51, 57, 59, 69, 75, 83, 85, 97, 101, 113, 117, 129, 131, 147, 153, 161, 163, 181, 185, 195, 203, 211, 219, 233, 243, 257, 259, 273, 275, 291, 307, 315, 321, 339, 341, 357, 369, 387, 389, 401, 417, 425, 437, 453, 465]

cp's OEIS Frontend

A056533 Even sieve: start with natural numbers, remove every 2nd term, remove every 4th term from what remains, remove every 6th term from what remains, etc.

Table of values

List of values

n	a(n)
1	1
2	3
3	5
4	9
5	11
6	17
7	19
8	25
9	27
10	35
11	37
12	43
13	51
14	57
15	59
16	69
17	75
18	83
19	85
20	97
21	101
22	113
23	117
24	129
25	131
26	147
27	153
28	161
29	163
30	181
31	185
32	195
33	203
34	211
35	219
36	233
37	243
38	257
39	259
40	273
41	275
42	291
43	307
44	315
45	321
46	339
47	341
48	357
49	369
50	387
51	389
52	401
53	417
54	425
55	437
56	453
57	465

n	a(n)
1	1
2	3
3	5
4	9
5	11
6	17
7	19
8	25
9	27
10	35
11	37
12	43
13	51
14	57
15	59
16	69
17	75
18	83
19	85
20	97
21	101
22	113
23	117
24	129
25	131
26	147
27	153
28	161
29	163
30	181
31	185
32	195
33	203
34	211
35	219
36	233
37	243
38	257
39	259
40	273
41	275
42	291
43	307
44	315
45	321
46	339
47	341
48	357
49	369
50	387
51	389
52	401
53	417
54	425
55	437
56	453
57	465

n	a(n)
1	1
2	3
3	5
4	9
5	11
6	17
7	19
8	25
9	27
10	35
11	37
12	43
13	51
14	57
15	59
16	69
17	75
18	83
19	85
20	97
21	101
22	113
23	117
24	129
25	131
26	147
27	153
28	161
29	163
30	181
31	185
32	195
33	203
34	211
35	219
36	233
37	243
38	257
39	259
40	273
41	275
42	291
43	307
44	315
45	321
46	339
47	341
48	357
49	369
50	387
51	389
52	401
53	417
54	425
55	437
56	453
57	465