A025671 - cp's OEIS frontend

A025671 Exponent of 7 (value of i) in n-th number of form 7^i*10^j.

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

[0, 1, 0, 2, 1, 0, 3, 2, 1, 0, 4, 3, 2, 1, 0, 5, 4, 3, 2, 1, 0, 6, 5, 4, 3, 2, 1, 7, 0, 6, 5, 4, 3, 2, 8, 1, 7, 0, 6, 5, 4, 3, 9, 2, 8, 1, 7, 0, 6, 5, 4, 10, 3, 9, 2, 8, 1, 7, 0, 6, 5, 11, 4, 10, 3, 9, 2, 8, 1, 7, 0, 6, 12, 5, 11, 4, 10, 3, 9, 2, 8, 1, 7, 13, 0, 6, 12, 5, 11, 4, 10, 3, 9, 2, 8, 14, 1, 7, 13, 0, 6]

cp's OEIS Frontend

A025671 Exponent of 7 (value of i) in n-th number of form 7^i*10^j.

Table of values

List of values

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

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

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