A063570 - cp's OEIS frontend

A063570 Smallest positive power of 7 having n in its decimal representation.

n	a(n)
0	4
1	4
2	4
3	3
4	2
5	7
6	5
7	1
8	5
9	2
10	13
11	6
12	12
13	12
14	19
15	15
16	5
17	6
18	19
19	11
20	12
21	22
22	14
23	7
24	4
25	30
26	11
27	23
28	10
29	16
30	14
31	19
32	11
33	16
34	3
35	7
36	9
37	19
38	12
39	17
40	4
41	12
42	27
43	3
44	18
45	21
46	32
47	10
48	8
49	2
50	15
51	17
52	10
53	9
54	7
55	21
56	15
57	8
58	21
59	18
60	9

[4, 4, 4, 3, 2, 7, 5, 1, 5, 2, 13, 6, 12, 12, 19, 15, 5, 6, 19, 11, 12, 22, 14, 7, 4, 30, 11, 23, 10, 16, 14, 19, 11, 16, 3, 7, 9, 19, 12, 17, 4, 12, 27, 3, 18, 21, 32, 10, 8, 2, 15, 17, 10, 9, 7, 21, 15, 8, 21, 18, 9]

cp's OEIS Frontend

A063570 Smallest positive power of 7 having n in its decimal representation.

Table of values

List of values

n	a(n)
0	4
1	4
2	4
3	3
4	2
5	7
6	5
7	1
8	5
9	2
10	13
11	6
12	12
13	12
14	19
15	15
16	5
17	6
18	19
19	11
20	12
21	22
22	14
23	7
24	4
25	30
26	11
27	23
28	10
29	16
30	14
31	19
32	11
33	16
34	3
35	7
36	9
37	19
38	12
39	17
40	4
41	12
42	27
43	3
44	18
45	21
46	32
47	10
48	8
49	2
50	15
51	17
52	10
53	9
54	7
55	21
56	15
57	8
58	21
59	18
60	9

n	a(n)
0	4
1	4
2	4
3	3
4	2
5	7
6	5
7	1
8	5
9	2
10	13
11	6
12	12
13	12
14	19
15	15
16	5
17	6
18	19
19	11
20	12
21	22
22	14
23	7
24	4
25	30
26	11
27	23
28	10
29	16
30	14
31	19
32	11
33	16
34	3
35	7
36	9
37	19
38	12
39	17
40	4
41	12
42	27
43	3
44	18
45	21
46	32
47	10
48	8
49	2
50	15
51	17
52	10
53	9
54	7
55	21
56	15
57	8
58	21
59	18
60	9

n	a(n)
0	4
1	4
2	4
3	3
4	2
5	7
6	5
7	1
8	5
9	2
10	13
11	6
12	12
13	12
14	19
15	15
16	5
17	6
18	19
19	11
20	12
21	22
22	14
23	7
24	4
25	30
26	11
27	23
28	10
29	16
30	14
31	19
32	11
33	16
34	3
35	7
36	9
37	19
38	12
39	17
40	4
41	12
42	27
43	3
44	18
45	21
46	32
47	10
48	8
49	2
50	15
51	17
52	10
53	9
54	7
55	21
56	15
57	8
58	21
59	18
60	9