A361945 - cp's OEIS frontend

A361945 If the ternary expansion of n starts with the digit 1, then replace 2's by 0's and vice versa; if the ternary expansion of n starts with the digit 2, then replace 1's by 0's and vice versa; a(0) = 0.

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

[0, 1, 2, 5, 4, 3, 7, 6, 8, 17, 16, 15, 14, 13, 12, 11, 10, 9, 22, 21, 23, 19, 18, 20, 25, 24, 26, 53, 52, 51, 50, 49, 48, 47, 46, 45, 44, 43, 42, 41, 40, 39, 38, 37, 36, 35, 34, 33, 32, 31, 30, 29, 28, 27, 67, 66, 68, 64, 63, 65, 70, 69, 71, 58, 57, 59, 55, 54]

cp's OEIS Frontend

A361945 If the ternary expansion of n starts with the digit 1, then replace 2's by 0's and vice versa; if the ternary expansion of n starts with the digit 2, then replace 1's by 0's and vice versa; a(0) = 0.

Table of values

List of values

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

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

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