A163252 - cp's OEIS frontend

A163252 a(0) = 0, and a(n) is the least positive integer not occurring earlier in the sequence such that a(n-1) and a(n) differ in only one bit when written in binary.

n	a(n)
0	0
1	1
2	3
3	2
4	6
5	4
6	5
7	7
8	15
9	11
10	9
11	8
12	10
13	14
14	12
15	13
16	29
17	21
18	17
19	16
20	18
21	19
22	23
23	22
24	20
25	28
26	24
27	25
28	27
29	26
30	30
31	31
32	63
33	47
34	39
35	35
36	33
37	32
38	34
39	38
40	36
41	37
42	45
43	41
44	40
45	42
46	43
47	59
48	51
49	49
50	48
51	50
52	54
53	52
54	53
55	55
56	119
57	87
58	71
59	67
60	65
61	64
62	66
63	70
64	68
65	69
66	77
67	73
68	72
69	74
70	75
71	79
72	78

[0, 1, 3, 2, 6, 4, 5, 7, 15, 11, 9, 8, 10, 14, 12, 13, 29, 21, 17, 16, 18, 19, 23, 22, 20, 28, 24, 25, 27, 26, 30, 31, 63, 47, 39, 35, 33, 32, 34, 38, 36, 37, 45, 41, 40, 42, 43, 59, 51, 49, 48, 50, 54, 52, 53, 55, 119, 87, 71, 67, 65, 64, 66, 70, 68, 69, 77, 73, 72, 74, 75, 79, 78]

cp's OEIS Frontend

A163252 a(0) = 0, and a(n) is the least positive integer not occurring earlier in the sequence such that a(n-1) and a(n) differ in only one bit when written in binary.

Table of values

List of values

n	a(n)
0	0
1	1
2	3
3	2
4	6
5	4
6	5
7	7
8	15
9	11
10	9
11	8
12	10
13	14
14	12
15	13
16	29
17	21
18	17
19	16
20	18
21	19
22	23
23	22
24	20
25	28
26	24
27	25
28	27
29	26
30	30
31	31
32	63
33	47
34	39
35	35
36	33
37	32
38	34
39	38
40	36
41	37
42	45
43	41
44	40
45	42
46	43
47	59
48	51
49	49
50	48
51	50
52	54
53	52
54	53
55	55
56	119
57	87
58	71
59	67
60	65
61	64
62	66
63	70
64	68
65	69
66	77
67	73
68	72
69	74
70	75
71	79
72	78

n	a(n)
0	0
1	1
2	3
3	2
4	6
5	4
6	5
7	7
8	15
9	11
10	9
11	8
12	10
13	14
14	12
15	13
16	29
17	21
18	17
19	16
20	18
21	19
22	23
23	22
24	20
25	28
26	24
27	25
28	27
29	26
30	30
31	31
32	63
33	47
34	39
35	35
36	33
37	32
38	34
39	38
40	36
41	37
42	45
43	41
44	40
45	42
46	43
47	59
48	51
49	49
50	48
51	50
52	54
53	52
54	53
55	55
56	119
57	87
58	71
59	67
60	65
61	64
62	66
63	70
64	68
65	69
66	77
67	73
68	72
69	74
70	75
71	79
72	78

n	a(n)
0	0
1	1
2	3
3	2
4	6
5	4
6	5
7	7
8	15
9	11
10	9
11	8
12	10
13	14
14	12
15	13
16	29
17	21
18	17
19	16
20	18
21	19
22	23
23	22
24	20
25	28
26	24
27	25
28	27
29	26
30	30
31	31
32	63
33	47
34	39
35	35
36	33
37	32
38	34
39	38
40	36
41	37
42	45
43	41
44	40
45	42
46	43
47	59
48	51
49	49
50	48
51	50
52	54
53	52
54	53
55	55
56	119
57	87
58	71
59	67
60	65
61	64
62	66
63	70
64	68
65	69
66	77
67	73
68	72
69	74
70	75
71	79
72	78