A025644 - cp's OEIS frontend

A025644 Exponent of 3 (value of i) in n-th number of form 3^i*10^j.

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

[0, 1, 2, 0, 3, 1, 4, 2, 0, 5, 3, 1, 6, 4, 2, 0, 7, 5, 3, 1, 8, 6, 4, 2, 0, 9, 7, 5, 3, 1, 10, 8, 6, 4, 2, 0, 11, 9, 7, 5, 3, 1, 12, 10, 8, 6, 4, 2, 0, 13, 11, 9, 7, 5, 3, 1, 14, 12, 10, 8, 6, 4, 2, 0, 15, 13, 11, 9, 7, 5, 3, 1, 16, 14, 12, 10, 8, 6, 4, 2, 0, 17, 15, 13, 11, 9, 7, 5, 3, 1, 18, 16, 14, 12, 10]

cp's OEIS Frontend

A025644 Exponent of 3 (value of i) in n-th number of form 3^i*10^j.

Table of values

List of values

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

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

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