A377484 - cp's OEIS frontend

A377484 a(n) = Product_{d|n, d>1} (d - 1).

n	a(n)
1	1
2	1
3	2
4	3
5	4
6	10
7	6
8	21
9	16
10	36
11	10
12	330
13	12
14	78
15	112
16	315
17	16
18	1360
19	18
20	2052
21	240
22	210
23	22
24	53130
25	96
26	300
27	416
28	6318
29	28
30	146160
31	30
32	9765
33	640
34	528
35	816
36	1570800
37	36
38	666
39	912
40	560196
41	40
42	639600
43	42
44	27090
45	39424
46	990
47	46
48	37456650
49	288
50	42336
51	1600
52	45900
53	52
54	1874080
55	2160

[1, 1, 2, 3, 4, 10, 6, 21, 16, 36, 10, 330, 12, 78, 112, 315, 16, 1360, 18, 2052, 240, 210, 22, 53130, 96, 300, 416, 6318, 28, 146160, 30, 9765, 640, 528, 816, 1570800, 36, 666, 912, 560196, 40, 639600, 42, 27090, 39424, 990, 46, 37456650, 288, 42336, 1600, 45900, 52, 1874080, 2160]

cp's OEIS Frontend

A377484 a(n) = Product_{d|n, d>1} (d - 1).

Table of values

List of values