A316385 - cp's OEIS frontend

A316385 Lexicographically earliest sequence of distinct positive terms such that for any n > 0, a(n) AND a(2*n) = a(n) (where AND denotes the binary AND operator).

n	a(n)
1	1
2	3
3	2
4	7
5	4
6	6
7	5
8	15
9	8
10	12
11	9
12	14
13	10
14	13
15	11
16	31
17	16
18	24
19	17
20	28
21	18
22	25
23	19
24	30
25	20
26	26
27	21
28	29
29	22
30	27
31	23
32	63
33	32
34	48
35	33
36	56
37	34
38	49
39	35
40	60
41	36
42	50
43	37
44	57
45	38
46	51
47	39
48	62
49	40
50	52
51	41
52	58
53	42
54	53
55	43
56	61
57	44
58	54
59	45
60	59
61	46
62	55
63	47
64	127
65	64
66	96
67	65

[1, 3, 2, 7, 4, 6, 5, 15, 8, 12, 9, 14, 10, 13, 11, 31, 16, 24, 17, 28, 18, 25, 19, 30, 20, 26, 21, 29, 22, 27, 23, 63, 32, 48, 33, 56, 34, 49, 35, 60, 36, 50, 37, 57, 38, 51, 39, 62, 40, 52, 41, 58, 42, 53, 43, 61, 44, 54, 45, 59, 46, 55, 47, 127, 64, 96, 65]

cp's OEIS Frontend

A316385 Lexicographically earliest sequence of distinct positive terms such that for any n > 0, a(n) AND a(2*n) = a(n) (where AND denotes the binary AND operator).

Table of values

List of values

n	a(n)
1	1
2	3
3	2
4	7
5	4
6	6
7	5
8	15
9	8
10	12
11	9
12	14
13	10
14	13
15	11
16	31
17	16
18	24
19	17
20	28
21	18
22	25
23	19
24	30
25	20
26	26
27	21
28	29
29	22
30	27
31	23
32	63
33	32
34	48
35	33
36	56
37	34
38	49
39	35
40	60
41	36
42	50
43	37
44	57
45	38
46	51
47	39
48	62
49	40
50	52
51	41
52	58
53	42
54	53
55	43
56	61
57	44
58	54
59	45
60	59
61	46
62	55
63	47
64	127
65	64
66	96
67	65

n	a(n)
1	1
2	3
3	2
4	7
5	4
6	6
7	5
8	15
9	8
10	12
11	9
12	14
13	10
14	13
15	11
16	31
17	16
18	24
19	17
20	28
21	18
22	25
23	19
24	30
25	20
26	26
27	21
28	29
29	22
30	27
31	23
32	63
33	32
34	48
35	33
36	56
37	34
38	49
39	35
40	60
41	36
42	50
43	37
44	57
45	38
46	51
47	39
48	62
49	40
50	52
51	41
52	58
53	42
54	53
55	43
56	61
57	44
58	54
59	45
60	59
61	46
62	55
63	47
64	127
65	64
66	96
67	65

n	a(n)
1	1
2	3
3	2
4	7
5	4
6	6
7	5
8	15
9	8
10	12
11	9
12	14
13	10
14	13
15	11
16	31
17	16
18	24
19	17
20	28
21	18
22	25
23	19
24	30
25	20
26	26
27	21
28	29
29	22
30	27
31	23
32	63
33	32
34	48
35	33
36	56
37	34
38	49
39	35
40	60
41	36
42	50
43	37
44	57
45	38
46	51
47	39
48	62
49	40
50	52
51	41
52	58
53	42
54	53
55	43
56	61
57	44
58	54
59	45
60	59
61	46
62	55
63	47
64	127
65	64
66	96
67	65