A350107 - cp's OEIS frontend

A350107 a(n) = Sum_{k=1..n} k * floor(n/k)^2.

n	a(n)
1	1
2	6
3	14
4	31
5	45
6	81
7	101
8	150
9	191
10	253
11	285
12	401
13	439
14	527
15	623
16	752
17	802
18	979
19	1035
20	1233
21	1369
22	1509
23	1577
24	1901
25	2020
26	2186
27	2362
28	2642
29	2728
30	3136
31	3228
32	3549
33	3765
34	3983
35	4215
36	4772
37	4882
38	5126
39	5382
40	5932
41	6054
42	6630
43	6758
44	7202
45	7664
46	7960
47	8100
48	8936

[1, 6, 14, 31, 45, 81, 101, 150, 191, 253, 285, 401, 439, 527, 623, 752, 802, 979, 1035, 1233, 1369, 1509, 1577, 1901, 2020, 2186, 2362, 2642, 2728, 3136, 3228, 3549, 3765, 3983, 4215, 4772, 4882, 5126, 5382, 5932, 6054, 6630, 6758, 7202, 7664, 7960, 8100, 8936]

cp's OEIS Frontend

A350107 a(n) = Sum_{k=1..n} k * floor(n/k)^2.

Table of values

List of values