A359399 - cp's OEIS frontend

A359399 a(1) = 1; a(n) = Sum_{k=2..n} k * a(floor(n/k)).

n	a(n)
1	1
2	2
3	5
4	11
5	16
6	31
7	38
8	62
9	80
10	105
11	116
12	194
13	207
14	242
15	287
16	383
17	400
18	526
19	545
20	675
21	738
22	793
23	816
24	1200
25	1250
26	1315
27	1423
28	1605
29	1634
30	1979
31	2010
32	2394
33	2493
34	2578
35	2683
36	3475
37	3512
38	3607
39	3724
40	4364
41	4405
42	4888
43	4931
44	5217
45	5577
46	5692
47	5739
48	7563
49	7661
50	8011

[1, 2, 5, 11, 16, 31, 38, 62, 80, 105, 116, 194, 207, 242, 287, 383, 400, 526, 545, 675, 738, 793, 816, 1200, 1250, 1315, 1423, 1605, 1634, 1979, 2010, 2394, 2493, 2578, 2683, 3475, 3512, 3607, 3724, 4364, 4405, 4888, 4931, 5217, 5577, 5692, 5739, 7563, 7661, 8011]

cp's OEIS Frontend

A359399 a(1) = 1; a(n) = Sum_{k=2..n} k * a(floor(n/k)).

Table of values

List of values