A260909 - cp's OEIS frontend

A260909 Denominator of 1/det(M) where M is the n X n matrix with M[i,j] = 1/gcd(i,j).

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	2
8	1
9	1
10	1
11	2
12	1
13	4
14	4
15	32
16	2
17	32
18	32
19	64
20	64
21	256
22	256
23	512
24	128
25	512
26	1024
27	2048
28	1024
29	4096
30	16384
31	32768
32	1024
33	4096
34	32768
35	262144
36	131072
37	524288
38	524288
39	4194304
40	2097152
41	16777216
42	33554432
43	67108864
44	33554432
45	268435456
46	268435456

[1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 4, 4, 32, 2, 32, 32, 64, 64, 256, 256, 512, 128, 512, 1024, 2048, 1024, 4096, 16384, 32768, 1024, 4096, 32768, 262144, 131072, 524288, 524288, 4194304, 2097152, 16777216, 33554432, 67108864, 33554432, 268435456, 268435456]

cp's OEIS Frontend

A260909 Denominator of 1/det(M) where M is the n X n matrix with M[i,j] = 1/gcd(i,j).

Table of values

List of values