A353828 - cp's OEIS frontend

A353828 The positions of nonzero digits in the balanced ternary expansions of n and a(n) are the same, and the k-th leftmost nonzero digit in a(n) equals the product of the k leftmost nonzero digits in n.

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

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

cp's OEIS Frontend

A353828 The positions of nonzero digits in the balanced ternary expansions of n and a(n) are the same, and the k-th leftmost nonzero digit in a(n) equals the product of the k leftmost nonzero digits in n.

Table of values

List of values

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

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

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