A344599 - cp's OEIS frontend

A344599 a(n) = Sum_{k=1..n} phi(k) * (floor(n/k)^3 - floor((n-1)/k)^3).

n	a(n)
1	1
2	8
3	21
4	46
5	65
6	126
7	133
8	224
9	261
10	364
11	341
12	618
13	481
14	722
15	837
16	1000
17	833
18	1404
19	1045
20	1718
21	1641
22	1798
23	1541
24	2760
25	2065
26	2516
27	2673
28	3346
29	2465
30	4410
31	2821
32	4256
33	4041
34	4312
35	4469
36	6462
37	4033
38	5390
39	5637
40	7504
41	4961
42	8532
43	5461
44	8186
45	8613
46	7906
47	6533
48	11736
49	7861
50	10640
51	9621

[1, 8, 21, 46, 65, 126, 133, 224, 261, 364, 341, 618, 481, 722, 837, 1000, 833, 1404, 1045, 1718, 1641, 1798, 1541, 2760, 2065, 2516, 2673, 3346, 2465, 4410, 2821, 4256, 4041, 4312, 4469, 6462, 4033, 5390, 5637, 7504, 4961, 8532, 5461, 8186, 8613, 7906, 6533, 11736, 7861, 10640, 9621]

cp's OEIS Frontend

A344599 a(n) = Sum_{k=1..n} phi(k) * (floor(n/k)^3 - floor((n-1)/k)^3).

Table of values

List of values