A332623 - cp's OEIS frontend

A332623 a(n) = Sum_{k=1..n} ceiling(n/k)^2.

n	a(n)
1	1
2	5
3	14
4	25
5	43
6	58
7	87
8	106
9	141
10	171
11	212
12	239
13	302
14	333
15	386
16	439
17	507
18	546
19	631
20	674
21	765
22	834
23	911
24	962
25	1091
26	1157
27	1246
28	1331
29	1450
30	1513
31	1666
32	1733
33	1866
34	1967
35	2080
36	2181
37	2373
38	2452
39	2577
40	2694
41	2883
42	2970
43	3171
44	3262
45	3437
46	3600
47	3749
48	3848
49	4107
50	4225

[1, 5, 14, 25, 43, 58, 87, 106, 141, 171, 212, 239, 302, 333, 386, 439, 507, 546, 631, 674, 765, 834, 911, 962, 1091, 1157, 1246, 1331, 1450, 1513, 1666, 1733, 1866, 1967, 2080, 2181, 2373, 2452, 2577, 2694, 2883, 2970, 3171, 3262, 3437, 3600, 3749, 3848, 4107, 4225]

cp's OEIS Frontend

A332623 a(n) = Sum_{k=1..n} ceiling(n/k)^2.

Table of values

List of values