A213858 - cp's OEIS frontend

A213858 Least m such that n! <= 4^m.

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	7
8	8
9	10
10	11
11	13
12	15
13	17
14	19
15	21
16	23
17	25
18	27
19	29
20	31
21	33
22	35
23	38
24	40
25	42
26	45
27	47
28	49
29	52
30	54
31	57
32	59
33	62
34	64
35	67
36	70
37	72
38	75
39	77
40	80
41	83
42	85
43	88
44	91
45	94
46	96
47	99
48	102
49	105
50	108
51	110
52	113
53	116
54	119
55	122
56	125
57	128
58	131
59	134
60	137
61	140
62	143
63	145
64	148

[0, 1, 2, 3, 4, 5, 7, 8, 10, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 38, 40, 42, 45, 47, 49, 52, 54, 57, 59, 62, 64, 67, 70, 72, 75, 77, 80, 83, 85, 88, 91, 94, 96, 99, 102, 105, 108, 110, 113, 116, 119, 122, 125, 128, 131, 134, 137, 140, 143, 145, 148]

cp's OEIS Frontend

A213858 Least m such that n! <= 4^m.

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	7
8	8
9	10
10	11
11	13
12	15
13	17
14	19
15	21
16	23
17	25
18	27
19	29
20	31
21	33
22	35
23	38
24	40
25	42
26	45
27	47
28	49
29	52
30	54
31	57
32	59
33	62
34	64
35	67
36	70
37	72
38	75
39	77
40	80
41	83
42	85
43	88
44	91
45	94
46	96
47	99
48	102
49	105
50	108
51	110
52	113
53	116
54	119
55	122
56	125
57	128
58	131
59	134
60	137
61	140
62	143
63	145
64	148

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	7
8	8
9	10
10	11
11	13
12	15
13	17
14	19
15	21
16	23
17	25
18	27
19	29
20	31
21	33
22	35
23	38
24	40
25	42
26	45
27	47
28	49
29	52
30	54
31	57
32	59
33	62
34	64
35	67
36	70
37	72
38	75
39	77
40	80
41	83
42	85
43	88
44	91
45	94
46	96
47	99
48	102
49	105
50	108
51	110
52	113
53	116
54	119
55	122
56	125
57	128
58	131
59	134
60	137
61	140
62	143
63	145
64	148

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	7
8	8
9	10
10	11
11	13
12	15
13	17
14	19
15	21
16	23
17	25
18	27
19	29
20	31
21	33
22	35
23	38
24	40
25	42
26	45
27	47
28	49
29	52
30	54
31	57
32	59
33	62
34	64
35	67
36	70
37	72
38	75
39	77
40	80
41	83
42	85
43	88
44	91
45	94
46	96
47	99
48	102
49	105
50	108
51	110
52	113
53	116
54	119
55	122
56	125
57	128
58	131
59	134
60	137
61	140
62	143
63	145
64	148