A329101 - cp's OEIS frontend

A329101 Lexicographically earliest sequence of distinct nonnegative integers such that for any n >= 0, the number of 1's in the base 4 expansion of n equals the number of 2's in the base 4 expansion of a(n).

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

[0, 2, 1, 3, 6, 10, 8, 9, 4, 11, 5, 7, 12, 14, 13, 15, 18, 26, 22, 24, 34, 42, 38, 40, 25, 41, 27, 30, 32, 43, 33, 35, 16, 36, 17, 19, 37, 46, 39, 44, 20, 45, 21, 23, 28, 47, 29, 31, 48, 50, 49, 51, 54, 58, 56, 57, 52, 59, 53, 55, 60, 62, 61, 63, 66, 74, 70, 72]

cp's OEIS Frontend

A329101 Lexicographically earliest sequence of distinct nonnegative integers such that for any n >= 0, the number of 1's in the base 4 expansion of n equals the number of 2's in the base 4 expansion of a(n).

Table of values

List of values

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

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

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