A166381 - cp's OEIS frontend

A166381 a(n) = Sum_{j>n} floor(n^2/j).

n	a(n)
1	0
2	2
3	7
4	17
5	31
6	52
7	76
8	108
9	146
10	191
11	242
12	301
13	364
14	437
15	518
16	605
17	700
18	804
19	914
20	1034
21	1160
22	1295
23	1438
24	1594
25	1751
26	1921
27	2098
28	2288
29	2483
30	2688
31	2898
32	3119
33	3350
34	3593
35	3845
36	4103
37	4369
38	4647
39	4937
40	5234
41	5540
42	5854
43	6178
44	6512
45	6859

[0, 2, 7, 17, 31, 52, 76, 108, 146, 191, 242, 301, 364, 437, 518, 605, 700, 804, 914, 1034, 1160, 1295, 1438, 1594, 1751, 1921, 2098, 2288, 2483, 2688, 2898, 3119, 3350, 3593, 3845, 4103, 4369, 4647, 4937, 5234, 5540, 5854, 6178, 6512, 6859]

cp's OEIS Frontend

A166381 a(n) = Sum_{j>n} floor(n^2/j).

Table of values

List of values