A027869 - cp's OEIS frontend

A027869 Number of 0's in n!.

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

[0, 0, 0, 0, 0, 1, 1, 2, 2, 1, 2, 2, 4, 4, 2, 4, 4, 4, 5, 6, 7, 7, 8, 5, 6, 9, 8, 9, 10, 7, 9, 7, 10, 8, 11, 9, 10, 12, 16, 12, 9, 15, 13, 13, 12, 13, 16, 11, 14, 14, 19, 18, 18, 17, 18, 18, 17, 20, 17, 19, 19, 26, 20, 21, 20, 20, 23, 22, 25, 21, 20, 25, 23, 35]

cp's OEIS Frontend

A027869 Number of 0's in n!.

Table of values

List of values

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

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

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