A025691 - cp's OEIS frontend

A025691 Exponent of 10 (value of j) in n-th number of form 9^i*10^j.

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	2
7	0
8	1
9	2
10	3
11	0
12	1
13	2
14	3
15	4
16	0
17	1
18	2
19	3
20	4
21	5
22	0
23	1
24	2
25	3
26	4
27	5
28	6
29	0
30	1
31	2
32	3
33	4
34	5
35	6
36	7
37	0
38	1
39	2
40	3
41	4
42	5
43	6
44	7
45	8
46	0
47	1
48	2
49	3
50	4
51	5
52	6
53	7
54	8
55	9
56	0
57	1
58	2
59	3
60	4
61	5
62	6
63	7
64	8
65	9
66	10
67	0
68	1
69	2
70	3
71	4
72	5
73	6
74	7
75	8
76	9
77	10
78	11
79	0
80	1
81	2
82	3
83	4
84	5
85	6
86	7
87	8
88	9
89	10
90	11
91	12
92	0
93	1
94	2
95	3
96	4
97	5
98	6
99	7
100	8
101	9
102	10
103	11

[0, 0, 1, 0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 6, 0, 1, 2, 3, 4, 5, 6, 7, 0, 1, 2, 3, 4, 5, 6, 7, 8, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]

cp's OEIS Frontend

A025691 Exponent of 10 (value of j) in n-th number of form 9^i*10^j.

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	2
7	0
8	1
9	2
10	3
11	0
12	1
13	2
14	3
15	4
16	0
17	1
18	2
19	3
20	4
21	5
22	0
23	1
24	2
25	3
26	4
27	5
28	6
29	0
30	1
31	2
32	3
33	4
34	5
35	6
36	7
37	0
38	1
39	2
40	3
41	4
42	5
43	6
44	7
45	8
46	0
47	1
48	2
49	3
50	4
51	5
52	6
53	7
54	8
55	9
56	0
57	1
58	2
59	3
60	4
61	5
62	6
63	7
64	8
65	9
66	10
67	0
68	1
69	2
70	3
71	4
72	5
73	6
74	7
75	8
76	9
77	10
78	11
79	0
80	1
81	2
82	3
83	4
84	5
85	6
86	7
87	8
88	9
89	10
90	11
91	12
92	0
93	1
94	2
95	3
96	4
97	5
98	6
99	7
100	8
101	9
102	10
103	11

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	2
7	0
8	1
9	2
10	3
11	0
12	1
13	2
14	3
15	4
16	0
17	1
18	2
19	3
20	4
21	5
22	0
23	1
24	2
25	3
26	4
27	5
28	6
29	0
30	1
31	2
32	3
33	4
34	5
35	6
36	7
37	0
38	1
39	2
40	3
41	4
42	5
43	6
44	7
45	8
46	0
47	1
48	2
49	3
50	4
51	5
52	6
53	7
54	8
55	9
56	0
57	1
58	2
59	3
60	4
61	5
62	6
63	7
64	8
65	9
66	10
67	0
68	1
69	2
70	3
71	4
72	5
73	6
74	7
75	8
76	9
77	10
78	11
79	0
80	1
81	2
82	3
83	4
84	5
85	6
86	7
87	8
88	9
89	10
90	11
91	12
92	0
93	1
94	2
95	3
96	4
97	5
98	6
99	7
100	8
101	9
102	10
103	11

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	2
7	0
8	1
9	2
10	3
11	0
12	1
13	2
14	3
15	4
16	0
17	1
18	2
19	3
20	4
21	5
22	0
23	1
24	2
25	3
26	4
27	5
28	6
29	0
30	1
31	2
32	3
33	4
34	5
35	6
36	7
37	0
38	1
39	2
40	3
41	4
42	5
43	6
44	7
45	8
46	0
47	1
48	2
49	3
50	4
51	5
52	6
53	7
54	8
55	9
56	0
57	1
58	2
59	3
60	4
61	5
62	6
63	7
64	8
65	9
66	10
67	0
68	1
69	2
70	3
71	4
72	5
73	6
74	7
75	8
76	9
77	10
78	11
79	0
80	1
81	2
82	3
83	4
84	5
85	6
86	7
87	8
88	9
89	10
90	11
91	12
92	0
93	1
94	2
95	3
96	4
97	5
98	6
99	7
100	8
101	9
102	10
103	11