A056676 - cp's OEIS frontend

A056676 Number of non-unitary but squarefree divisors of binomial(n,floor(n/2)). Also number of nonsquarefree but unitary divisors of binomial(n,floor(n/2)).

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	2
7	0
8	0
9	4
10	6
11	0
12	8
13	8
14	8
15	8
16	16
17	0
18	16
19	0
20	16
21	32
22	32
23	0
24	32
25	48
26	48
27	56
28	56
29	96
30	96
31	64
32	128
33	128
34	192
35	256
36	384
37	384
38	384
39	512
40	768
41	512
42	512
43	512
44	512
45	448
46	448
47	768
48	896
49	896
50	896
51	896
52	896
53	768
54	768
55	2048
56	2048
57	4096
58	4096
59	2048
60	2048
61	2048
62	2048

[0, 0, 0, 0, 0, 2, 0, 0, 4, 6, 0, 8, 8, 8, 8, 16, 0, 16, 0, 16, 32, 32, 0, 32, 48, 48, 56, 56, 96, 96, 64, 128, 128, 192, 256, 384, 384, 384, 512, 768, 512, 512, 512, 512, 448, 448, 768, 896, 896, 896, 896, 896, 768, 768, 2048, 2048, 4096, 4096, 2048, 2048, 2048, 2048]

cp's OEIS Frontend

A056676 Number of non-unitary but squarefree divisors of binomial(n,floor(n/2)). Also number of nonsquarefree but unitary divisors of binomial(n,floor(n/2)).

Table of values

List of values