A101267 - cp's OEIS frontend

A101267 a(1) = 1; a(n) = a(2^ceiling(log_2(n)) + 1 - n)th smallest positive integer not yet in the sequence.

n	a(n)
1	1
2	2
3	4
4	3
5	7
6	9
7	6
8	5
9	13
10	15
11	19
12	17
13	11
14	14
15	10
16	8
17	24
18	27
19	32
20	29
21	37
22	40
23	35
24	33
25	21
26	23
27	30
28	26
29	18
30	22
31	16
32	12
33	44
34	49
35	56
36	52
37	62
38	67
39	59
40	57
41	73
42	76
43	82
44	79
45	69
46	74
47	66
48	63
49	39
50	43
51	50
52	46
53	58
54	64
55	54
56	51
57	34
58	38
59	47
60	42
61	28
62	36
63	25
64	20
65	84
66	90
67	102
68	94
69	110
70	116
71	106

[1, 2, 4, 3, 7, 9, 6, 5, 13, 15, 19, 17, 11, 14, 10, 8, 24, 27, 32, 29, 37, 40, 35, 33, 21, 23, 30, 26, 18, 22, 16, 12, 44, 49, 56, 52, 62, 67, 59, 57, 73, 76, 82, 79, 69, 74, 66, 63, 39, 43, 50, 46, 58, 64, 54, 51, 34, 38, 47, 42, 28, 36, 25, 20, 84, 90, 102, 94, 110, 116, 106]

cp's OEIS Frontend

A101267 a(1) = 1; a(n) = a(2^ceiling(log_2(n)) + 1 - n)th smallest positive integer not yet in the sequence.

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	3
5	7
6	9
7	6
8	5
9	13
10	15
11	19
12	17
13	11
14	14
15	10
16	8
17	24
18	27
19	32
20	29
21	37
22	40
23	35
24	33
25	21
26	23
27	30
28	26
29	18
30	22
31	16
32	12
33	44
34	49
35	56
36	52
37	62
38	67
39	59
40	57
41	73
42	76
43	82
44	79
45	69
46	74
47	66
48	63
49	39
50	43
51	50
52	46
53	58
54	64
55	54
56	51
57	34
58	38
59	47
60	42
61	28
62	36
63	25
64	20
65	84
66	90
67	102
68	94
69	110
70	116
71	106

n	a(n)
1	1
2	2
3	4
4	3
5	7
6	9
7	6
8	5
9	13
10	15
11	19
12	17
13	11
14	14
15	10
16	8
17	24
18	27
19	32
20	29
21	37
22	40
23	35
24	33
25	21
26	23
27	30
28	26
29	18
30	22
31	16
32	12
33	44
34	49
35	56
36	52
37	62
38	67
39	59
40	57
41	73
42	76
43	82
44	79
45	69
46	74
47	66
48	63
49	39
50	43
51	50
52	46
53	58
54	64
55	54
56	51
57	34
58	38
59	47
60	42
61	28
62	36
63	25
64	20
65	84
66	90
67	102
68	94
69	110
70	116
71	106

n	a(n)
1	1
2	2
3	4
4	3
5	7
6	9
7	6
8	5
9	13
10	15
11	19
12	17
13	11
14	14
15	10
16	8
17	24
18	27
19	32
20	29
21	37
22	40
23	35
24	33
25	21
26	23
27	30
28	26
29	18
30	22
31	16
32	12
33	44
34	49
35	56
36	52
37	62
38	67
39	59
40	57
41	73
42	76
43	82
44	79
45	69
46	74
47	66
48	63
49	39
50	43
51	50
52	46
53	58
54	64
55	54
56	51
57	34
58	38
59	47
60	42
61	28
62	36
63	25
64	20
65	84
66	90
67	102
68	94
69	110
70	116
71	106