A305925 - cp's OEIS frontend

A305925 Irregular table read by rows in which row n >= 0 lists all k >= 0 such that the decimal representation of 5^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	9
9	10
10	11
11	17
12	18
13	30
14	33
15	58
16	8
17	12
18	14
19	15
20	16
21	19
22	20
23	21
24	22
25	25
26	26
27	31
28	41
29	42
30	43
31	85
32	13
33	23
34	24
35	27
36	28
37	29
38	32
39	36
40	37
41	56
42	57
43	107
44	34
45	35
46	38
47	39
48	50
49	54
50	59
51	74
52	75
53	84
54	112
55	40
56	44
57	46
58	47
59	49
60	51
61	60
62	73
63	78
64	79
65	82
66	83
67	86
68	88
69	89
70	95
71	96
72	97
73	106
74	113
75	127

[0, 1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 17, 18, 30, 33, 58, 8, 12, 14, 15, 16, 19, 20, 21, 22, 25, 26, 31, 41, 42, 43, 85, 13, 23, 24, 27, 28, 29, 32, 36, 37, 56, 57, 107, 34, 35, 38, 39, 50, 54, 59, 74, 75, 84, 112, 40, 44, 46, 47, 49, 51, 60, 73, 78, 79, 82, 83, 86, 88, 89, 95, 96, 97, 106, 113, 127]

cp's OEIS Frontend

A305925 Irregular table read by rows in which row n >= 0 lists all k >= 0 such that the decimal representation of 5^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	9
9	10
10	11
11	17
12	18
13	30
14	33
15	58
16	8
17	12
18	14
19	15
20	16
21	19
22	20
23	21
24	22
25	25
26	26
27	31
28	41
29	42
30	43
31	85
32	13
33	23
34	24
35	27
36	28
37	29
38	32
39	36
40	37
41	56
42	57
43	107
44	34
45	35
46	38
47	39
48	50
49	54
50	59
51	74
52	75
53	84
54	112
55	40
56	44
57	46
58	47
59	49
60	51
61	60
62	73
63	78
64	79
65	82
66	83
67	86
68	88
69	89
70	95
71	96
72	97
73	106
74	113
75	127

n	a(n)
0	0
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	9
9	10
10	11
11	17
12	18
13	30
14	33
15	58
16	8
17	12
18	14
19	15
20	16
21	19
22	20
23	21
24	22
25	25
26	26
27	31
28	41
29	42
30	43
31	85
32	13
33	23
34	24
35	27
36	28
37	29
38	32
39	36
40	37
41	56
42	57
43	107
44	34
45	35
46	38
47	39
48	50
49	54
50	59
51	74
52	75
53	84
54	112
55	40
56	44
57	46
58	47
59	49
60	51
61	60
62	73
63	78
64	79
65	82
66	83
67	86
68	88
69	89
70	95
71	96
72	97
73	106
74	113
75	127

n	a(n)
0	0
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	9
9	10
10	11
11	17
12	18
13	30
14	33
15	58
16	8
17	12
18	14
19	15
20	16
21	19
22	20
23	21
24	22
25	25
26	26
27	31
28	41
29	42
30	43
31	85
32	13
33	23
34	24
35	27
36	28
37	29
38	32
39	36
40	37
41	56
42	57
43	107
44	34
45	35
46	38
47	39
48	50
49	54
50	59
51	74
52	75
53	84
54	112
55	40
56	44
57	46
58	47
59	49
60	51
61	60
62	73
63	78
64	79
65	82
66	83
67	86
68	88
69	89
70	95
71	96
72	97
73	106
74	113
75	127