A048656 - cp's OEIS frontend

A048656 a(n) is the number of unitary (and also of squarefree) divisors of n!.

n	a(n)
1	1
2	2
3	4
4	4
5	8
6	8
7	16
8	16
9	16
10	16
11	32
12	32
13	64
14	64
15	64
16	64
17	128
18	128
19	256
20	256
21	256
22	256
23	512
24	512
25	512
26	512
27	512
28	512
29	1024
30	1024
31	2048
32	2048
33	2048
34	2048
35	2048
36	2048
37	4096
38	4096
39	4096
40	4096
41	8192
42	8192
43	16384
44	16384
45	16384
46	16384
47	32768
48	32768
49	32768
50	32768

[1, 2, 4, 4, 8, 8, 16, 16, 16, 16, 32, 32, 64, 64, 64, 64, 128, 128, 256, 256, 256, 256, 512, 512, 512, 512, 512, 512, 1024, 1024, 2048, 2048, 2048, 2048, 2048, 2048, 4096, 4096, 4096, 4096, 8192, 8192, 16384, 16384, 16384, 16384, 32768, 32768, 32768, 32768]

cp's OEIS Frontend

A048656 a(n) is the number of unitary (and also of squarefree) divisors of n!.

Table of values

List of values