A075317 - cp's OEIS frontend

A075317 Pair the odd numbers such that the k-th pair is (r, r+2k) where r is the smallest odd number not included earlier: (1,3),(5,9),(7,13),(11,19),(15,25),(17,29),(21,35),(23,39),(27,45),... This is the sequence of the first member of pairs.

n	a(n)
1	1
2	5
3	7
4	11
5	15
6	17
7	21
8	23
9	27
10	31
11	33
12	37
13	41
14	43
15	47
16	49
17	53
18	57
19	59
20	63
21	65
22	69
23	73
24	75
25	79
26	83
27	85
28	89
29	91
30	95
31	99
32	101
33	105
34	109
35	111
36	115
37	117
38	121
39	125
40	127
41	131
42	133
43	137
44	141
45	143
46	147
47	151
48	153
49	157
50	159
51	163
52	167
53	169
54	173
55	175
56	179
57	183
58	185
59	189
60	193

[1, 5, 7, 11, 15, 17, 21, 23, 27, 31, 33, 37, 41, 43, 47, 49, 53, 57, 59, 63, 65, 69, 73, 75, 79, 83, 85, 89, 91, 95, 99, 101, 105, 109, 111, 115, 117, 121, 125, 127, 131, 133, 137, 141, 143, 147, 151, 153, 157, 159, 163, 167, 169, 173, 175, 179, 183, 185, 189, 193]

cp's OEIS Frontend

A075317 Pair the odd numbers such that the k-th pair is (r, r+2k) where r is the smallest odd number not included earlier: (1,3),(5,9),(7,13),(11,19),(15,25),(17,29),(21,35),(23,39),(27,45),... This is the sequence of the first member of pairs.

Table of values

List of values

n	a(n)
1	1
2	5
3	7
4	11
5	15
6	17
7	21
8	23
9	27
10	31
11	33
12	37
13	41
14	43
15	47
16	49
17	53
18	57
19	59
20	63
21	65
22	69
23	73
24	75
25	79
26	83
27	85
28	89
29	91
30	95
31	99
32	101
33	105
34	109
35	111
36	115
37	117
38	121
39	125
40	127
41	131
42	133
43	137
44	141
45	143
46	147
47	151
48	153
49	157
50	159
51	163
52	167
53	169
54	173
55	175
56	179
57	183
58	185
59	189
60	193

n	a(n)
1	1
2	5
3	7
4	11
5	15
6	17
7	21
8	23
9	27
10	31
11	33
12	37
13	41
14	43
15	47
16	49
17	53
18	57
19	59
20	63
21	65
22	69
23	73
24	75
25	79
26	83
27	85
28	89
29	91
30	95
31	99
32	101
33	105
34	109
35	111
36	115
37	117
38	121
39	125
40	127
41	131
42	133
43	137
44	141
45	143
46	147
47	151
48	153
49	157
50	159
51	163
52	167
53	169
54	173
55	175
56	179
57	183
58	185
59	189
60	193

n	a(n)
1	1
2	5
3	7
4	11
5	15
6	17
7	21
8	23
9	27
10	31
11	33
12	37
13	41
14	43
15	47
16	49
17	53
18	57
19	59
20	63
21	65
22	69
23	73
24	75
25	79
26	83
27	85
28	89
29	91
30	95
31	99
32	101
33	105
34	109
35	111
36	115
37	117
38	121
39	125
40	127
41	131
42	133
43	137
44	141
45	143
46	147
47	151
48	153
49	157
50	159
51	163
52	167
53	169
54	173
55	175
56	179
57	183
58	185
59	189
60	193