A366983 - cp's OEIS frontend

A366983 a(n) = Sum_{k=1..n} (k+1) * floor(n/k).

n	a(n)
1	2
2	7
3	13
4	23
5	31
6	47
7	57
8	76
9	92
10	114
11	128
12	162
13	178
14	206
15	234
16	270
17	290
18	335
19	357
20	405
21	441
22	481
23	507
24	575
25	609
26	655
27	699
28	761
29	793
30	873
31	907
32	976
33	1028
34	1086
35	1138
36	1238
37	1278
38	1342
39	1402
40	1500
41	1544
42	1648
43	1694
44	1784
45	1868
46	1944
47	1994
48	2128
49	2188
50	2287
51	2363
52	2467

[2, 7, 13, 23, 31, 47, 57, 76, 92, 114, 128, 162, 178, 206, 234, 270, 290, 335, 357, 405, 441, 481, 507, 575, 609, 655, 699, 761, 793, 873, 907, 976, 1028, 1086, 1138, 1238, 1278, 1342, 1402, 1500, 1544, 1648, 1694, 1784, 1868, 1944, 1994, 2128, 2188, 2287, 2363, 2467]

cp's OEIS Frontend

A366983 a(n) = Sum_{k=1..n} (k+1) * floor(n/k).

Table of values

List of values