A262374 - cp's OEIS frontend

A262374 a(1) = 1; for n > 1, let s denote the binary representation of a(n-1) with the first bit omitted. Then a(n) is the smallest number not yet present whose binary representation starts with s, omitting leading zeros.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	8
8	7
9	12
10	9
11	10
12	11
13	13
14	20
15	16
16	14
17	24
18	17
19	15
20	28
21	25
22	18
23	19
24	26
25	21
26	22
27	27
28	23
29	29
30	52
31	40
32	32
33	30
34	56
35	48
36	33
37	31
38	60
39	57
40	50
41	36
42	34
43	35
44	49
45	68
46	37
47	41
48	38
49	51
50	39
51	58
52	53
53	42
54	43
55	44
56	96
57	64
58	45
59	54
60	88
61	97
62	66
63	46
64	59
65	55
66	47
67	61

[1, 2, 3, 4, 5, 6, 8, 7, 12, 9, 10, 11, 13, 20, 16, 14, 24, 17, 15, 28, 25, 18, 19, 26, 21, 22, 27, 23, 29, 52, 40, 32, 30, 56, 48, 33, 31, 60, 57, 50, 36, 34, 35, 49, 68, 37, 41, 38, 51, 39, 58, 53, 42, 43, 44, 96, 64, 45, 54, 88, 97, 66, 46, 59, 55, 47, 61]

cp's OEIS Frontend

A262374 a(1) = 1; for n > 1, let s denote the binary representation of a(n-1) with the first bit omitted. Then a(n) is the smallest number not yet present whose binary representation starts with s, omitting leading zeros.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	8
8	7
9	12
10	9
11	10
12	11
13	13
14	20
15	16
16	14
17	24
18	17
19	15
20	28
21	25
22	18
23	19
24	26
25	21
26	22
27	27
28	23
29	29
30	52
31	40
32	32
33	30
34	56
35	48
36	33
37	31
38	60
39	57
40	50
41	36
42	34
43	35
44	49
45	68
46	37
47	41
48	38
49	51
50	39
51	58
52	53
53	42
54	43
55	44
56	96
57	64
58	45
59	54
60	88
61	97
62	66
63	46
64	59
65	55
66	47
67	61

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	8
8	7
9	12
10	9
11	10
12	11
13	13
14	20
15	16
16	14
17	24
18	17
19	15
20	28
21	25
22	18
23	19
24	26
25	21
26	22
27	27
28	23
29	29
30	52
31	40
32	32
33	30
34	56
35	48
36	33
37	31
38	60
39	57
40	50
41	36
42	34
43	35
44	49
45	68
46	37
47	41
48	38
49	51
50	39
51	58
52	53
53	42
54	43
55	44
56	96
57	64
58	45
59	54
60	88
61	97
62	66
63	46
64	59
65	55
66	47
67	61

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	8
8	7
9	12
10	9
11	10
12	11
13	13
14	20
15	16
16	14
17	24
18	17
19	15
20	28
21	25
22	18
23	19
24	26
25	21
26	22
27	27
28	23
29	29
30	52
31	40
32	32
33	30
34	56
35	48
36	33
37	31
38	60
39	57
40	50
41	36
42	34
43	35
44	49
45	68
46	37
47	41
48	38
49	51
50	39
51	58
52	53
53	42
54	43
55	44
56	96
57	64
58	45
59	54
60	88
61	97
62	66
63	46
64	59
65	55
66	47
67	61