A025689 - cp's OEIS frontend

A025689 Exponent of 10 (value of j) in n-th number of form 7^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	0
29	6
30	1
31	2
32	3
33	4
34	5
35	0
36	6
37	1
38	7
39	2
40	3
41	4
42	5
43	0
44	6
45	1
46	7
47	2
48	8
49	3
50	4
51	5
52	0
53	6
54	1
55	7
56	2
57	8
58	3
59	9
60	4
61	5
62	0
63	6
64	1
65	7
66	2
67	8
68	3
69	9
70	4
71	10
72	5
73	0
74	6
75	1
76	7
77	2
78	8
79	3
80	9
81	4
82	10
83	5
84	0
85	11
86	6
87	1
88	7
89	2
90	8
91	3
92	9
93	4
94	10
95	5
96	0
97	11
98	6
99	1
100	12
101	7
102	2
103	8
104	3

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

cp's OEIS Frontend

A025689 Exponent of 10 (value of j) in n-th number of form 7^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	0
29	6
30	1
31	2
32	3
33	4
34	5
35	0
36	6
37	1
38	7
39	2
40	3
41	4
42	5
43	0
44	6
45	1
46	7
47	2
48	8
49	3
50	4
51	5
52	0
53	6
54	1
55	7
56	2
57	8
58	3
59	9
60	4
61	5
62	0
63	6
64	1
65	7
66	2
67	8
68	3
69	9
70	4
71	10
72	5
73	0
74	6
75	1
76	7
77	2
78	8
79	3
80	9
81	4
82	10
83	5
84	0
85	11
86	6
87	1
88	7
89	2
90	8
91	3
92	9
93	4
94	10
95	5
96	0
97	11
98	6
99	1
100	12
101	7
102	2
103	8
104	3

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	0
29	6
30	1
31	2
32	3
33	4
34	5
35	0
36	6
37	1
38	7
39	2
40	3
41	4
42	5
43	0
44	6
45	1
46	7
47	2
48	8
49	3
50	4
51	5
52	0
53	6
54	1
55	7
56	2
57	8
58	3
59	9
60	4
61	5
62	0
63	6
64	1
65	7
66	2
67	8
68	3
69	9
70	4
71	10
72	5
73	0
74	6
75	1
76	7
77	2
78	8
79	3
80	9
81	4
82	10
83	5
84	0
85	11
86	6
87	1
88	7
89	2
90	8
91	3
92	9
93	4
94	10
95	5
96	0
97	11
98	6
99	1
100	12
101	7
102	2
103	8
104	3

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	0
29	6
30	1
31	2
32	3
33	4
34	5
35	0
36	6
37	1
38	7
39	2
40	3
41	4
42	5
43	0
44	6
45	1
46	7
47	2
48	8
49	3
50	4
51	5
52	0
53	6
54	1
55	7
56	2
57	8
58	3
59	9
60	4
61	5
62	0
63	6
64	1
65	7
66	2
67	8
68	3
69	9
70	4
71	10
72	5
73	0
74	6
75	1
76	7
77	2
78	8
79	3
80	9
81	4
82	10
83	5
84	0
85	11
86	6
87	1
88	7
89	2
90	8
91	3
92	9
93	4
94	10
95	5
96	0
97	11
98	6
99	1
100	12
101	7
102	2
103	8
104	3