A261231 - cp's OEIS frontend

A261231 a(n) = number of steps to reach 0 when starting from k = n and repeatedly applying the map that replaces k with k - (sum of digits in base-3 representation of k).

n	a(n)
0	0
1	1
2	1
3	2
4	2
5	2
6	3
7	3
8	3
9	4
10	4
11	4
12	5
13	5
14	5
15	6
16	6
17	6
18	7
19	7
20	7
21	8
22	8
23	8
24	8
25	8
26	8
27	9
28	9
29	9
30	10
31	10
32	10
33	11
34	11
35	11
36	12
37	12
38	12
39	13
40	13
41	13
42	13
43	13
44	13
45	14
46	14
47	14
48	14
49	14
50	14
51	15
52	15
53	15
54	16
55	16
56	16
57	17
58	17
59	17
60	17
61	17
62	17
63	18
64	18
65	18
66	18
67	18
68	18
69	19
70	19
71	19
72	19
73	19
74	19
75	20
76	20
77	20
78	20
79	20
80	20
81	21
82	21
83	21
84	22
85	22
86	22
87	23
88	23
89	23
90	24
91	24
92	24

[0, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6, 7, 7, 7, 8, 8, 8, 8, 8, 8, 9, 9, 9, 10, 10, 10, 11, 11, 11, 12, 12, 12, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 15, 15, 15, 16, 16, 16, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 21, 21, 21, 22, 22, 22, 23, 23, 23, 24, 24, 24]

cp's OEIS Frontend

A261231 a(n) = number of steps to reach 0 when starting from k = n and repeatedly applying the map that replaces k with k - (sum of digits in base-3 representation of k).

Table of values

List of values

n	a(n)
0	0
1	1
2	1
3	2
4	2
5	2
6	3
7	3
8	3
9	4
10	4
11	4
12	5
13	5
14	5
15	6
16	6
17	6
18	7
19	7
20	7
21	8
22	8
23	8
24	8
25	8
26	8
27	9
28	9
29	9
30	10
31	10
32	10
33	11
34	11
35	11
36	12
37	12
38	12
39	13
40	13
41	13
42	13
43	13
44	13
45	14
46	14
47	14
48	14
49	14
50	14
51	15
52	15
53	15
54	16
55	16
56	16
57	17
58	17
59	17
60	17
61	17
62	17
63	18
64	18
65	18
66	18
67	18
68	18
69	19
70	19
71	19
72	19
73	19
74	19
75	20
76	20
77	20
78	20
79	20
80	20
81	21
82	21
83	21
84	22
85	22
86	22
87	23
88	23
89	23
90	24
91	24
92	24

n	a(n)
0	0
1	1
2	1
3	2
4	2
5	2
6	3
7	3
8	3
9	4
10	4
11	4
12	5
13	5
14	5
15	6
16	6
17	6
18	7
19	7
20	7
21	8
22	8
23	8
24	8
25	8
26	8
27	9
28	9
29	9
30	10
31	10
32	10
33	11
34	11
35	11
36	12
37	12
38	12
39	13
40	13
41	13
42	13
43	13
44	13
45	14
46	14
47	14
48	14
49	14
50	14
51	15
52	15
53	15
54	16
55	16
56	16
57	17
58	17
59	17
60	17
61	17
62	17
63	18
64	18
65	18
66	18
67	18
68	18
69	19
70	19
71	19
72	19
73	19
74	19
75	20
76	20
77	20
78	20
79	20
80	20
81	21
82	21
83	21
84	22
85	22
86	22
87	23
88	23
89	23
90	24
91	24
92	24

n	a(n)
0	0
1	1
2	1
3	2
4	2
5	2
6	3
7	3
8	3
9	4
10	4
11	4
12	5
13	5
14	5
15	6
16	6
17	6
18	7
19	7
20	7
21	8
22	8
23	8
24	8
25	8
26	8
27	9
28	9
29	9
30	10
31	10
32	10
33	11
34	11
35	11
36	12
37	12
38	12
39	13
40	13
41	13
42	13
43	13
44	13
45	14
46	14
47	14
48	14
49	14
50	14
51	15
52	15
53	15
54	16
55	16
56	16
57	17
58	17
59	17
60	17
61	17
62	17
63	18
64	18
65	18
66	18
67	18
68	18
69	19
70	19
71	19
72	19
73	19
74	19
75	20
76	20
77	20
78	20
79	20
80	20
81	21
82	21
83	21
84	22
85	22
86	22
87	23
88	23
89	23
90	24
91	24
92	24