A305933 - cp's OEIS frontend

A305933 Irregular table read by rows: row n >= 0 lists all k >= 0 such that the decimal representation of 3^k has n digits '0' (conjectured).

n	a(n)
0	0
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	11
11	12
12	13
13	14
14	19
15	23
16	24
17	26
18	27
19	28
20	31
21	34
22	68
23	10
24	15
25	16
26	17
27	18
28	20
29	25
30	29
31	43
32	47
33	50
34	52
35	63
36	72
37	73
38	22
39	30
40	32
41	33
42	36
43	38
44	39
45	40
46	41
47	42
48	44
49	45
50	46
51	48
52	51
53	53
54	56
55	58
56	60
57	61
58	62
59	64
60	69
61	71
62	83
63	93
64	96
65	108
66	111
67	123
68	136
69	21
70	37
71	49
72	67
73	75
74	81
75	82
76	87
77	90
78	105
79	112
80	121
81	129

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 19, 23, 24, 26, 27, 28, 31, 34, 68, 10, 15, 16, 17, 18, 20, 25, 29, 43, 47, 50, 52, 63, 72, 73, 22, 30, 32, 33, 36, 38, 39, 40, 41, 42, 44, 45, 46, 48, 51, 53, 56, 58, 60, 61, 62, 64, 69, 71, 83, 93, 96, 108, 111, 123, 136, 21, 37, 49, 67, 75, 81, 82, 87, 90, 105, 112, 121, 129]

cp's OEIS Frontend

A305933 Irregular table read by rows: row n >= 0 lists all k >= 0 such that the decimal representation of 3^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	5
6	6
7	7
8	8
9	9
10	11
11	12
12	13
13	14
14	19
15	23
16	24
17	26
18	27
19	28
20	31
21	34
22	68
23	10
24	15
25	16
26	17
27	18
28	20
29	25
30	29
31	43
32	47
33	50
34	52
35	63
36	72
37	73
38	22
39	30
40	32
41	33
42	36
43	38
44	39
45	40
46	41
47	42
48	44
49	45
50	46
51	48
52	51
53	53
54	56
55	58
56	60
57	61
58	62
59	64
60	69
61	71
62	83
63	93
64	96
65	108
66	111
67	123
68	136
69	21
70	37
71	49
72	67
73	75
74	81
75	82
76	87
77	90
78	105
79	112
80	121
81	129

n	a(n)
0	0
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	11
11	12
12	13
13	14
14	19
15	23
16	24
17	26
18	27
19	28
20	31
21	34
22	68
23	10
24	15
25	16
26	17
27	18
28	20
29	25
30	29
31	43
32	47
33	50
34	52
35	63
36	72
37	73
38	22
39	30
40	32
41	33
42	36
43	38
44	39
45	40
46	41
47	42
48	44
49	45
50	46
51	48
52	51
53	53
54	56
55	58
56	60
57	61
58	62
59	64
60	69
61	71
62	83
63	93
64	96
65	108
66	111
67	123
68	136
69	21
70	37
71	49
72	67
73	75
74	81
75	82
76	87
77	90
78	105
79	112
80	121
81	129

n	a(n)
0	0
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	11
11	12
12	13
13	14
14	19
15	23
16	24
17	26
18	27
19	28
20	31
21	34
22	68
23	10
24	15
25	16
26	17
27	18
28	20
29	25
30	29
31	43
32	47
33	50
34	52
35	63
36	72
37	73
38	22
39	30
40	32
41	33
42	36
43	38
44	39
45	40
46	41
47	42
48	44
49	45
50	46
51	48
52	51
53	53
54	56
55	58
56	60
57	61
58	62
59	64
60	69
61	71
62	83
63	93
64	96
65	108
66	111
67	123
68	136
69	21
70	37
71	49
72	67
73	75
74	81
75	82
76	87
77	90
78	105
79	112
80	121
81	129