A332490 - cp's OEIS frontend

A332490 a(n) = Sum_{k=1..n} k * ceiling(n/k).

n	a(n)
1	1
2	4
3	10
4	18
5	30
6	42
7	61
8	77
9	101
10	124
11	153
12	177
13	218
14	246
15	285
16	325
17	373
18	409
19	467
20	507
21	570
22	624
23	683
24	731
25	816
26	873
27	942
28	1010
29	1095
30	1155
31	1258
32	1322
33	1418
34	1500
35	1589
36	1673
37	1801
38	1877
39	1976
40	2072
41	2203
42	2287
43	2426
44	2514
45	2643
46	2767
47	2886
48	2982
49	3155
50	3262

[1, 4, 10, 18, 30, 42, 61, 77, 101, 124, 153, 177, 218, 246, 285, 325, 373, 409, 467, 507, 570, 624, 683, 731, 816, 873, 942, 1010, 1095, 1155, 1258, 1322, 1418, 1500, 1589, 1673, 1801, 1877, 1976, 2072, 2203, 2287, 2426, 2514, 2643, 2767, 2886, 2982, 3155, 3262]

cp's OEIS Frontend

A332490 a(n) = Sum_{k=1..n} k * ceiling(n/k).

Table of values

List of values