A333576 - cp's OEIS frontend

A333576 a(1) = 1; thereafter a(n) = n * uphi(n) / 2.

n	a(n)
1	1
2	1
3	3
4	6
5	10
6	6
7	21
8	28
9	36
10	20
11	55
12	36
13	78
14	42
15	60
16	120
17	136
18	72
19	171
20	120
21	126
22	110
23	253
24	168
25	300
26	156
27	351
28	252
29	406
30	120
31	465
32	496
33	330
34	272
35	420
36	432
37	666
38	342
39	468
40	560
41	820
42	252
43	903
44	660
45	720
46	506
47	1081
48	720
49	1176
50	600
51	816
52	936
53	1378
54	702
55	1100
56	1176
57	1026
58	812
59	1711
60	720

[1, 1, 3, 6, 10, 6, 21, 28, 36, 20, 55, 36, 78, 42, 60, 120, 136, 72, 171, 120, 126, 110, 253, 168, 300, 156, 351, 252, 406, 120, 465, 496, 330, 272, 420, 432, 666, 342, 468, 560, 820, 252, 903, 660, 720, 506, 1081, 720, 1176, 600, 816, 936, 1378, 702, 1100, 1176, 1026, 812, 1711, 720]

cp's OEIS Frontend

A333576 a(1) = 1; thereafter a(n) = n * uphi(n) / 2.

Table of values

List of values