A357616 - cp's OEIS frontend

A357616 Lexicographically earliest sequence of distinct nonnegative integers such that for any n >= 0, the number of 1's in the ternary expansion of n equals the number of 2's in the ternary expansion of a(n) and vice versa.

n	a(n)
0	0
1	2
2	1
3	6
4	8
5	5
6	3
7	7
8	4
9	18
10	20
11	11
12	24
13	26
14	17
15	15
16	23
17	14
18	9
19	19
20	10
21	21
22	25
23	16
24	12
25	22
26	13
27	54
28	56
29	29
30	60
31	62
32	35
33	33
34	47
35	32
36	72
37	74
38	51
39	78
40	80
41	53
42	59
43	71
44	44
45	45
46	61
47	34
48	65
49	77
50	50
51	38
52	52
53	41
54	27
55	55
56	28
57	57
58	69
59	42
60	30
61	46
62	31
63	63
64	73
65	48
66	75
67	79

[0, 2, 1, 6, 8, 5, 3, 7, 4, 18, 20, 11, 24, 26, 17, 15, 23, 14, 9, 19, 10, 21, 25, 16, 12, 22, 13, 54, 56, 29, 60, 62, 35, 33, 47, 32, 72, 74, 51, 78, 80, 53, 59, 71, 44, 45, 61, 34, 65, 77, 50, 38, 52, 41, 27, 55, 28, 57, 69, 42, 30, 46, 31, 63, 73, 48, 75, 79]

cp's OEIS Frontend

A357616 Lexicographically earliest sequence of distinct nonnegative integers such that for any n >= 0, the number of 1's in the ternary expansion of n equals the number of 2's in the ternary expansion of a(n) and vice versa.

Table of values

List of values

n	a(n)
0	0
1	2
2	1
3	6
4	8
5	5
6	3
7	7
8	4
9	18
10	20
11	11
12	24
13	26
14	17
15	15
16	23
17	14
18	9
19	19
20	10
21	21
22	25
23	16
24	12
25	22
26	13
27	54
28	56
29	29
30	60
31	62
32	35
33	33
34	47
35	32
36	72
37	74
38	51
39	78
40	80
41	53
42	59
43	71
44	44
45	45
46	61
47	34
48	65
49	77
50	50
51	38
52	52
53	41
54	27
55	55
56	28
57	57
58	69
59	42
60	30
61	46
62	31
63	63
64	73
65	48
66	75
67	79

n	a(n)
0	0
1	2
2	1
3	6
4	8
5	5
6	3
7	7
8	4
9	18
10	20
11	11
12	24
13	26
14	17
15	15
16	23
17	14
18	9
19	19
20	10
21	21
22	25
23	16
24	12
25	22
26	13
27	54
28	56
29	29
30	60
31	62
32	35
33	33
34	47
35	32
36	72
37	74
38	51
39	78
40	80
41	53
42	59
43	71
44	44
45	45
46	61
47	34
48	65
49	77
50	50
51	38
52	52
53	41
54	27
55	55
56	28
57	57
58	69
59	42
60	30
61	46
62	31
63	63
64	73
65	48
66	75
67	79

n	a(n)
0	0
1	2
2	1
3	6
4	8
5	5
6	3
7	7
8	4
9	18
10	20
11	11
12	24
13	26
14	17
15	15
16	23
17	14
18	9
19	19
20	10
21	21
22	25
23	16
24	12
25	22
26	13
27	54
28	56
29	29
30	60
31	62
32	35
33	33
34	47
35	32
36	72
37	74
38	51
39	78
40	80
41	53
42	59
43	71
44	44
45	45
46	61
47	34
48	65
49	77
50	50
51	38
52	52
53	41
54	27
55	55
56	28
57	57
58	69
59	42
60	30
61	46
62	31
63	63
64	73
65	48
66	75
67	79