A213855 - cp's OEIS frontend

A213855 Least m > 0 such that m! * 4^m >= n!.

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

[1, 1, 2, 2, 3, 4, 4, 5, 6, 7, 7, 8, 9, 9, 10, 11, 12, 12, 13, 14, 15, 15, 16, 17, 18, 18, 19, 20, 21, 22, 22, 23, 24, 25, 25, 26, 27, 28, 28, 29, 30, 31, 32, 32, 33, 34, 35, 36, 36, 37, 38, 39, 39, 40, 41, 42, 43, 43, 44, 45, 46, 47, 47, 48]

cp's OEIS Frontend

A213855 Least m > 0 such that m! * 4^m >= n!.

Table of values

List of values

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

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

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