A305932 - cp's OEIS frontend

A305932 Irregular table: row n >= 0 lists all k >= 0 such that the decimal representation of 2^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	13
11	14
12	15
13	16
14	18
15	19
16	24
17	25
18	27
19	28
20	31
21	32
22	33
23	34
24	35
25	36
26	37
27	39
28	49
29	51
30	67
31	72
32	76
33	77
34	81
35	86
36	10
37	11
38	12
39	17
40	20
41	21
42	22
43	23
44	26
45	29
46	30
47	38
48	40
49	41
50	44
51	45
52	46
53	47
54	48
55	50
56	57
57	58
58	65
59	66
60	68
61	71
62	73
63	74
64	75
65	84
66	85
67	95
68	96
69	122
70	124
71	129
72	130
73	149
74	151
75	184
76	43
77	53
78	61
79	69
80	70

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 13, 14, 15, 16, 18, 19, 24, 25, 27, 28, 31, 32, 33, 34, 35, 36, 37, 39, 49, 51, 67, 72, 76, 77, 81, 86, 10, 11, 12, 17, 20, 21, 22, 23, 26, 29, 30, 38, 40, 41, 44, 45, 46, 47, 48, 50, 57, 58, 65, 66, 68, 71, 73, 74, 75, 84, 85, 95, 96, 122, 124, 129, 130, 149, 151, 184, 43, 53, 61, 69, 70]

cp's OEIS Frontend

A305932 Irregular table: row n >= 0 lists all k >= 0 such that the decimal representation of 2^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	13
11	14
12	15
13	16
14	18
15	19
16	24
17	25
18	27
19	28
20	31
21	32
22	33
23	34
24	35
25	36
26	37
27	39
28	49
29	51
30	67
31	72
32	76
33	77
34	81
35	86
36	10
37	11
38	12
39	17
40	20
41	21
42	22
43	23
44	26
45	29
46	30
47	38
48	40
49	41
50	44
51	45
52	46
53	47
54	48
55	50
56	57
57	58
58	65
59	66
60	68
61	71
62	73
63	74
64	75
65	84
66	85
67	95
68	96
69	122
70	124
71	129
72	130
73	149
74	151
75	184
76	43
77	53
78	61
79	69
80	70

n	a(n)
0	0
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	13
11	14
12	15
13	16
14	18
15	19
16	24
17	25
18	27
19	28
20	31
21	32
22	33
23	34
24	35
25	36
26	37
27	39
28	49
29	51
30	67
31	72
32	76
33	77
34	81
35	86
36	10
37	11
38	12
39	17
40	20
41	21
42	22
43	23
44	26
45	29
46	30
47	38
48	40
49	41
50	44
51	45
52	46
53	47
54	48
55	50
56	57
57	58
58	65
59	66
60	68
61	71
62	73
63	74
64	75
65	84
66	85
67	95
68	96
69	122
70	124
71	129
72	130
73	149
74	151
75	184
76	43
77	53
78	61
79	69
80	70

n	a(n)
0	0
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	13
11	14
12	15
13	16
14	18
15	19
16	24
17	25
18	27
19	28
20	31
21	32
22	33
23	34
24	35
25	36
26	37
27	39
28	49
29	51
30	67
31	72
32	76
33	77
34	81
35	86
36	10
37	11
38	12
39	17
40	20
41	21
42	22
43	23
44	26
45	29
46	30
47	38
48	40
49	41
50	44
51	45
52	46
53	47
54	48
55	50
56	57
57	58
58	65
59	66
60	68
61	71
62	73
63	74
64	75
65	84
66	85
67	95
68	96
69	122
70	124
71	129
72	130
73	149
74	151
75	184
76	43
77	53
78	61
79	69
80	70