A305929 - cp's OEIS frontend

A305929 Irregular table: row n >= 0 lists all k >= 0 such that the decimal representation of 9^k has n digits '0' (conjectured).

n	a(n)
0	0
1	1
2	2
3	3
4	4
5	6
6	7
7	12
8	13
9	14
10	17
11	34
12	5
13	8
14	9
15	10
16	25
17	26
18	36
19	11
20	15
21	16
22	18
23	19
24	20
25	21
26	22
27	23
28	24
29	28
30	29
31	30
32	31
33	32
34	48
35	54
36	68
37	41
38	45
39	56
40	33
41	35
42	37
43	44
44	49
45	53
46	58
47	64
48	65
49	38
50	39
51	40
52	43
53	46
54	51
55	52
56	59
57	61
58	67
59	82
60	83
61	106
62	42
63	47
64	62
65	66
66	69
67	72
68	73
69	76
70	84
71	89
72	144
73	27
74	50

[0, 1, 2, 3, 4, 6, 7, 12, 13, 14, 17, 34, 5, 8, 9, 10, 25, 26, 36, 11, 15, 16, 18, 19, 20, 21, 22, 23, 24, 28, 29, 30, 31, 32, 48, 54, 68, 41, 45, 56, 33, 35, 37, 44, 49, 53, 58, 64, 65, 38, 39, 40, 43, 46, 51, 52, 59, 61, 67, 82, 83, 106, 42, 47, 62, 66, 69, 72, 73, 76, 84, 89, 144, 27, 50]

cp's OEIS Frontend

A305929 Irregular table: row n >= 0 lists all k >= 0 such that the decimal representation of 9^k has n digits '0' (conjectured).

Table of values

List of values

n	a(n)
0	0
1	1
2	2
3	3
4	4
5	6
6	7
7	12
8	13
9	14
10	17
11	34
12	5
13	8
14	9
15	10
16	25
17	26
18	36
19	11
20	15
21	16
22	18
23	19
24	20
25	21
26	22
27	23
28	24
29	28
30	29
31	30
32	31
33	32
34	48
35	54
36	68
37	41
38	45
39	56
40	33
41	35
42	37
43	44
44	49
45	53
46	58
47	64
48	65
49	38
50	39
51	40
52	43
53	46
54	51
55	52
56	59
57	61
58	67
59	82
60	83
61	106
62	42
63	47
64	62
65	66
66	69
67	72
68	73
69	76
70	84
71	89
72	144
73	27
74	50

n	a(n)
0	0
1	1
2	2
3	3
4	4
5	6
6	7
7	12
8	13
9	14
10	17
11	34
12	5
13	8
14	9
15	10
16	25
17	26
18	36
19	11
20	15
21	16
22	18
23	19
24	20
25	21
26	22
27	23
28	24
29	28
30	29
31	30
32	31
33	32
34	48
35	54
36	68
37	41
38	45
39	56
40	33
41	35
42	37
43	44
44	49
45	53
46	58
47	64
48	65
49	38
50	39
51	40
52	43
53	46
54	51
55	52
56	59
57	61
58	67
59	82
60	83
61	106
62	42
63	47
64	62
65	66
66	69
67	72
68	73
69	76
70	84
71	89
72	144
73	27
74	50

n	a(n)
0	0
1	1
2	2
3	3
4	4
5	6
6	7
7	12
8	13
9	14
10	17
11	34
12	5
13	8
14	9
15	10
16	25
17	26
18	36
19	11
20	15
21	16
22	18
23	19
24	20
25	21
26	22
27	23
28	24
29	28
30	29
31	30
32	31
33	32
34	48
35	54
36	68
37	41
38	45
39	56
40	33
41	35
42	37
43	44
44	49
45	53
46	58
47	64
48	65
49	38
50	39
51	40
52	43
53	46
54	51
55	52
56	59
57	61
58	67
59	82
60	83
61	106
62	42
63	47
64	62
65	66
66	69
67	72
68	73
69	76
70	84
71	89
72	144
73	27
74	50