A138565 - cp's OEIS frontend

A138565 Array read by rows: T(n,k) is the number of automorphisms of the k-th Abelian group of order n, where the ordering is such that the rows are nondecreasing.

n	a(n)
1	1
2	1
3	2
4	2
5	6
6	4
7	2
8	6
9	4
10	8
11	168
12	6
13	48
14	4
15	10
16	4
17	12
18	12
19	6
20	8
21	8
22	16
23	96
24	192
25	20160
26	16
27	6
28	48
29	18
30	8
31	24
32	12
33	10
34	22
35	8
36	16
37	336
38	20
39	480
40	12
41	18
42	108
43	11232
44	12
45	36
46	28
47	8
48	30
49	16
50	32
51	128
52	384
53	1536
54	21504
55	9999360
56	20
57	16
58	24
59	12
60	36
61	96
62	288
63	36
64	18
65	24
66	16
67	32
68	672

[1, 1, 2, 2, 6, 4, 2, 6, 4, 8, 168, 6, 48, 4, 10, 4, 12, 12, 6, 8, 8, 16, 96, 192, 20160, 16, 6, 48, 18, 8, 24, 12, 10, 22, 8, 16, 336, 20, 480, 12, 18, 108, 11232, 12, 36, 28, 8, 30, 16, 32, 128, 384, 1536, 21504, 9999360, 20, 16, 24, 12, 36, 96, 288, 36, 18, 24, 16, 32, 672]

cp's OEIS Frontend

A138565 Array read by rows: T(n,k) is the number of automorphisms of the k-th Abelian group of order n, where the ordering is such that the rows are nondecreasing.

Table of values

List of values