A079714 - cp's OEIS frontend

A079714 Number of 2's in n!.

n	a(n)
0	0
1	0
2	1
3	0
4	1
5	1
6	1
7	0
8	1
9	1
10	1
11	0
12	0
13	3
14	2
15	0
16	3
17	1
18	2
19	2
20	3
21	1
22	2
23	2
24	2
25	1
26	2
27	1
28	0
29	0
30	4
31	7
32	3
33	1
34	4
35	3
36	3
37	3
38	7
39	4
40	5
41	4
42	3
43	4
44	4
45	4
46	8
47	6
48	6
49	10
50	3
51	10
52	3
53	6
54	9
55	6
56	1
57	9
58	10
59	6
60	9
61	10
62	13
63	8
64	6
65	11
66	8
67	8
68	8
69	14
70	7
71	8
72	10
73	8
74	14
75	9
76	12
77	10
78	16
79	8
80	12
81	9
82	5
83	9
84	12
85	14
86	17
87	16
88	12
89	9
90	10
91	8
92	8
93	17
94	11
95	19
96	7
97	13
98	16
99	19
100	19
101	14

[0, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 0, 3, 2, 0, 3, 1, 2, 2, 3, 1, 2, 2, 2, 1, 2, 1, 0, 0, 4, 7, 3, 1, 4, 3, 3, 3, 7, 4, 5, 4, 3, 4, 4, 4, 8, 6, 6, 10, 3, 10, 3, 6, 9, 6, 1, 9, 10, 6, 9, 10, 13, 8, 6, 11, 8, 8, 8, 14, 7, 8, 10, 8, 14, 9, 12, 10, 16, 8, 12, 9, 5, 9, 12, 14, 17, 16, 12, 9, 10, 8, 8, 17, 11, 19, 7, 13, 16, 19, 19, 14]

cp's OEIS Frontend

A079714 Number of 2's in n!.

Table of values

List of values

n	a(n)
0	0
1	0
2	1
3	0
4	1
5	1
6	1
7	0
8	1
9	1
10	1
11	0
12	0
13	3
14	2
15	0
16	3
17	1
18	2
19	2
20	3
21	1
22	2
23	2
24	2
25	1
26	2
27	1
28	0
29	0
30	4
31	7
32	3
33	1
34	4
35	3
36	3
37	3
38	7
39	4
40	5
41	4
42	3
43	4
44	4
45	4
46	8
47	6
48	6
49	10
50	3
51	10
52	3
53	6
54	9
55	6
56	1
57	9
58	10
59	6
60	9
61	10
62	13
63	8
64	6
65	11
66	8
67	8
68	8
69	14
70	7
71	8
72	10
73	8
74	14
75	9
76	12
77	10
78	16
79	8
80	12
81	9
82	5
83	9
84	12
85	14
86	17
87	16
88	12
89	9
90	10
91	8
92	8
93	17
94	11
95	19
96	7
97	13
98	16
99	19
100	19
101	14

n	a(n)
0	0
1	0
2	1
3	0
4	1
5	1
6	1
7	0
8	1
9	1
10	1
11	0
12	0
13	3
14	2
15	0
16	3
17	1
18	2
19	2
20	3
21	1
22	2
23	2
24	2
25	1
26	2
27	1
28	0
29	0
30	4
31	7
32	3
33	1
34	4
35	3
36	3
37	3
38	7
39	4
40	5
41	4
42	3
43	4
44	4
45	4
46	8
47	6
48	6
49	10
50	3
51	10
52	3
53	6
54	9
55	6
56	1
57	9
58	10
59	6
60	9
61	10
62	13
63	8
64	6
65	11
66	8
67	8
68	8
69	14
70	7
71	8
72	10
73	8
74	14
75	9
76	12
77	10
78	16
79	8
80	12
81	9
82	5
83	9
84	12
85	14
86	17
87	16
88	12
89	9
90	10
91	8
92	8
93	17
94	11
95	19
96	7
97	13
98	16
99	19
100	19
101	14

n	a(n)
0	0
1	0
2	1
3	0
4	1
5	1
6	1
7	0
8	1
9	1
10	1
11	0
12	0
13	3
14	2
15	0
16	3
17	1
18	2
19	2
20	3
21	1
22	2
23	2
24	2
25	1
26	2
27	1
28	0
29	0
30	4
31	7
32	3
33	1
34	4
35	3
36	3
37	3
38	7
39	4
40	5
41	4
42	3
43	4
44	4
45	4
46	8
47	6
48	6
49	10
50	3
51	10
52	3
53	6
54	9
55	6
56	1
57	9
58	10
59	6
60	9
61	10
62	13
63	8
64	6
65	11
66	8
67	8
68	8
69	14
70	7
71	8
72	10
73	8
74	14
75	9
76	12
77	10
78	16
79	8
80	12
81	9
82	5
83	9
84	12
85	14
86	17
87	16
88	12
89	9
90	10
91	8
92	8
93	17
94	11
95	19
96	7
97	13
98	16
99	19
100	19
101	14