A124443 - cp's OEIS frontend

A124443 a(1)=1, a(n) = LCM of the integers, from 1 to n/2, which are coprime to n.

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	6
8	3
9	4
10	3
11	60
12	5
13	60
14	15
15	28
16	105
17	840
18	35
19	2520
20	63
21	40
22	315
23	27720
24	385
25	5544
26	3465
27	40040
28	6435
29	360360
30	1001
31	360360
32	45045
33	7280
34	45045
35	350064
36	85085
37	12252240
38	765765
39	1989680
40	2909907
41	232792560
42	230945
43	232792560
44	1322685

[1, 1, 1, 1, 2, 1, 6, 3, 4, 3, 60, 5, 60, 15, 28, 105, 840, 35, 2520, 63, 40, 315, 27720, 385, 5544, 3465, 40040, 6435, 360360, 1001, 360360, 45045, 7280, 45045, 350064, 85085, 12252240, 765765, 1989680, 2909907, 232792560, 230945, 232792560, 1322685]

cp's OEIS Frontend

A124443 a(1)=1, a(n) = LCM of the integers, from 1 to n/2, which are coprime to n.

Table of values

List of values