A353824 - cp's OEIS frontend

A353824 The positions of nonzero digits in the ternary expansions of n and a(n) are the same, and the k-th leftmost nonzero digit in a(n) equals modulo 3 the product of the k leftmost nonzero digits in n.

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

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

cp's OEIS Frontend

A353824 The positions of nonzero digits in the ternary expansions of n and a(n) are the same, and the k-th leftmost nonzero digit in a(n) equals modulo 3 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	5
6	6
7	8
8	7
9	9
10	10
11	11
12	12
13	13
14	14
15	15
16	17
17	16
18	18
19	20
20	19
21	24
22	26
23	25
24	21
25	22
26	23
27	27
28	28
29	29
30	30
31	31
32	32
33	33
34	35
35	34
36	36
37	37
38	38
39	39
40	40
41	41
42	42
43	44
44	43
45	45
46	47
47	46
48	51
49	53
50	52
51	48
52	49
53	50
54	54
55	56
56	55
57	60
58	62
59	61
60	57
61	58
62	59
63	72
64	74
65	73
66	78
67	80

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

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