A305939 - cp's OEIS frontend

A305939 Number of powers of 9 having exactly n digits '0' (in base 10), conjectured.

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

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

cp's OEIS Frontend

A305939 Number of powers of 9 having exactly n digits '0' (in base 10), conjectured.

Table of values

List of values

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

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

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