A026257 - cp's OEIS frontend

A026257 a(n) = (1/2)*(s(n) + 1), where s(n) is the n-th odd number in A026255.

n	a(n)
1	1
2	2
3	4
4	5
5	3
6	6
7	11
8	12
9	7
10	8
11	9
12	17
13	18
14	10
15	19
16	24
17	13
18	25
19	14
20	15
21	16
22	30
23	31
24	32
25	37
26	20
27	38
28	21
29	22
30	23
31	43
32	44
33	45
34	26
35	49
36	50
37	27
38	51
39	28
40	29
41	56
42	57
43	58
44	33
45	62
46	63
47	34
48	64
49	35
50	36
51	69
52	70
53	71
54	39
55	40
56	75
57	76
58	41
59	77
60	42
61	82
62	83
63	84

[1, 2, 4, 5, 3, 6, 11, 12, 7, 8, 9, 17, 18, 10, 19, 24, 13, 25, 14, 15, 16, 30, 31, 32, 37, 20, 38, 21, 22, 23, 43, 44, 45, 26, 49, 50, 27, 51, 28, 29, 56, 57, 58, 33, 62, 63, 34, 64, 35, 36, 69, 70, 71, 39, 40, 75, 76, 41, 77, 42, 82, 83, 84]

cp's OEIS Frontend

A026257 a(n) = (1/2)*(s(n) + 1), where s(n) is the n-th odd number in A026255.

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	5
5	3
6	6
7	11
8	12
9	7
10	8
11	9
12	17
13	18
14	10
15	19
16	24
17	13
18	25
19	14
20	15
21	16
22	30
23	31
24	32
25	37
26	20
27	38
28	21
29	22
30	23
31	43
32	44
33	45
34	26
35	49
36	50
37	27
38	51
39	28
40	29
41	56
42	57
43	58
44	33
45	62
46	63
47	34
48	64
49	35
50	36
51	69
52	70
53	71
54	39
55	40
56	75
57	76
58	41
59	77
60	42
61	82
62	83
63	84

n	a(n)
1	1
2	2
3	4
4	5
5	3
6	6
7	11
8	12
9	7
10	8
11	9
12	17
13	18
14	10
15	19
16	24
17	13
18	25
19	14
20	15
21	16
22	30
23	31
24	32
25	37
26	20
27	38
28	21
29	22
30	23
31	43
32	44
33	45
34	26
35	49
36	50
37	27
38	51
39	28
40	29
41	56
42	57
43	58
44	33
45	62
46	63
47	34
48	64
49	35
50	36
51	69
52	70
53	71
54	39
55	40
56	75
57	76
58	41
59	77
60	42
61	82
62	83
63	84

n	a(n)
1	1
2	2
3	4
4	5
5	3
6	6
7	11
8	12
9	7
10	8
11	9
12	17
13	18
14	10
15	19
16	24
17	13
18	25
19	14
20	15
21	16
22	30
23	31
24	32
25	37
26	20
27	38
28	21
29	22
30	23
31	43
32	44
33	45
34	26
35	49
36	50
37	27
38	51
39	28
40	29
41	56
42	57
43	58
44	33
45	62
46	63
47	34
48	64
49	35
50	36
51	69
52	70
53	71
54	39
55	40
56	75
57	76
58	41
59	77
60	42
61	82
62	83
63	84