A270172 - cp's OEIS frontend

A270172 Number of steps required to reach a single-digit number when successively increasing all digits of n by 1 simultaneously and removing leading zeros (9 becomes 0).

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

[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2]

cp's OEIS Frontend

A270172 Number of steps required to reach a single-digit number when successively increasing all digits of n by 1 simultaneously and removing leading zeros (9 becomes 0).

Table of values

List of values

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

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

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