A090617 - cp's OEIS frontend

A090617 Exponent of highest power of 8 dividing n!.

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

[0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, 10, 10, 10, 10, 11, 11, 11, 11, 12, 12, 13, 13, 13, 13, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 17, 17, 18, 18, 18, 18, 19, 19, 21, 21, 21, 21, 22, 22, 22, 22, 23, 23, 23, 23, 24, 24, 24, 24]

cp's OEIS Frontend

A090617 Exponent of highest power of 8 dividing n!.

Table of values

List of values

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

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

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