A056673 - cp's OEIS frontend

A056673 Number of unitary and squarefree divisors of binomial(n, floor(n/2)). Also the number of divisors of the powerfree part of A001405(n), A056060(n).

n	a(n)
1	1
2	2
3	2
4	4
5	4
6	2
7	4
8	8
9	4
10	2
11	16
12	8
13	8
14	8
15	8
16	16
17	32
18	16
19	32
20	16
21	32
22	32
23	64
24	32
25	16
26	16
27	8
28	8
29	32
30	32
31	64
32	128
33	128
34	64
35	256
36	128
37	128
38	128
39	512
40	256
41	512
42	512
43	512
44	512
45	64
46	64
47	256
48	128
49	128
50	128
51	128
52	128
53	256
54	256
55	2048
56	2048
57	4096
58	4096
59	2048
60	2048
61	2048
62	2048

[1, 2, 2, 4, 4, 2, 4, 8, 4, 2, 16, 8, 8, 8, 8, 16, 32, 16, 32, 16, 32, 32, 64, 32, 16, 16, 8, 8, 32, 32, 64, 128, 128, 64, 256, 128, 128, 128, 512, 256, 512, 512, 512, 512, 64, 64, 256, 128, 128, 128, 128, 128, 256, 256, 2048, 2048, 4096, 4096, 2048, 2048, 2048, 2048]

cp's OEIS Frontend

A056673 Number of unitary and squarefree divisors of binomial(n, floor(n/2)). Also the number of divisors of the powerfree part of A001405(n), A056060(n).

Table of values

List of values