A329424 - cp's OEIS frontend

A329424 Starting from n: as long as the decimal representation starts with a positive multiple of 3, divide the largest such prefix by 3; a(n) corresponds to the final value.

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

[0, 1, 2, 1, 4, 5, 2, 7, 8, 1, 10, 11, 4, 13, 14, 5, 16, 17, 2, 19, 20, 7, 22, 23, 8, 25, 26, 1, 28, 29, 10, 11, 4, 11, 14, 5, 4, 17, 2, 13, 40, 41, 14, 43, 44, 5, 46, 47, 16, 49, 50, 17, 52, 53, 2, 55, 56, 19, 58, 59, 20, 7, 22, 7, 8, 25, 22, 1, 28, 23, 70, 71]

cp's OEIS Frontend

A329424 Starting from n: as long as the decimal representation starts with a positive multiple of 3, divide the largest such prefix by 3; a(n) corresponds to the final value.

Table of values

List of values

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

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

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