A127032 - cp's OEIS frontend

A127032 Maximal value of m such that 5^m <= n! : a(n) = floor( log(n!) / log(5) ).

n	a(n)
1	0
2	0
3	1
4	1
5	2
6	4
7	5
8	6
9	7
10	9
11	10
12	12
13	14
14	15
15	17
16	19
17	20
18	22
19	24
20	26
21	28
22	30
23	32
24	34
25	36
26	38
27	40
28	42
29	44
30	46
31	48
32	50
33	52
34	55
35	57
36	59
37	61
38	63
39	66
40	68
41	70
42	73
43	75
44	77
45	80
46	82
47	85
48	87
49	89
50	92
51	94
52	97
53	99
54	102
55	104
56	107
57	109
58	112
59	114
60	117

[0, 0, 1, 1, 2, 4, 5, 6, 7, 9, 10, 12, 14, 15, 17, 19, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 55, 57, 59, 61, 63, 66, 68, 70, 73, 75, 77, 80, 82, 85, 87, 89, 92, 94, 97, 99, 102, 104, 107, 109, 112, 114, 117]

cp's OEIS Frontend

A127032 Maximal value of m such that 5^m <= n! : a(n) = floor( log(n!) / log(5) ).

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	1
5	2
6	4
7	5
8	6
9	7
10	9
11	10
12	12
13	14
14	15
15	17
16	19
17	20
18	22
19	24
20	26
21	28
22	30
23	32
24	34
25	36
26	38
27	40
28	42
29	44
30	46
31	48
32	50
33	52
34	55
35	57
36	59
37	61
38	63
39	66
40	68
41	70
42	73
43	75
44	77
45	80
46	82
47	85
48	87
49	89
50	92
51	94
52	97
53	99
54	102
55	104
56	107
57	109
58	112
59	114
60	117

n	a(n)
1	0
2	0
3	1
4	1
5	2
6	4
7	5
8	6
9	7
10	9
11	10
12	12
13	14
14	15
15	17
16	19
17	20
18	22
19	24
20	26
21	28
22	30
23	32
24	34
25	36
26	38
27	40
28	42
29	44
30	46
31	48
32	50
33	52
34	55
35	57
36	59
37	61
38	63
39	66
40	68
41	70
42	73
43	75
44	77
45	80
46	82
47	85
48	87
49	89
50	92
51	94
52	97
53	99
54	102
55	104
56	107
57	109
58	112
59	114
60	117

n	a(n)
1	0
2	0
3	1
4	1
5	2
6	4
7	5
8	6
9	7
10	9
11	10
12	12
13	14
14	15
15	17
16	19
17	20
18	22
19	24
20	26
21	28
22	30
23	32
24	34
25	36
26	38
27	40
28	42
29	44
30	46
31	48
32	50
33	52
34	55
35	57
36	59
37	61
38	63
39	66
40	68
41	70
42	73
43	75
44	77
45	80
46	82
47	85
48	87
49	89
50	92
51	94
52	97
53	99
54	102
55	104
56	107
57	109
58	112
59	114
60	117