A366984 - cp's OEIS frontend

A366984 a(n) = Sum_{k=1..n} binomial(k+2,2) * floor(n/k).

n	a(n)
1	3
2	12
3	25
4	49
5	73
6	120
7	159
8	228
9	296
10	392
11	473
12	626
13	734
14	899
15	1069
16	1291
17	1465
18	1757
19	1970
20	2312
21	2614
22	2977
23	3280
24	3803
25	4178
26	4670
27	5144
28	5759
29	6227
30	6993
31	7524
32	8307
33	8993
34	9803
35	10529
36	11630
37	12374
38	13373
39	14311
40	15559
41	16465
42	17867
43	18860
44	20273
45	21579
46	23016

[3, 12, 25, 49, 73, 120, 159, 228, 296, 392, 473, 626, 734, 899, 1069, 1291, 1465, 1757, 1970, 2312, 2614, 2977, 3280, 3803, 4178, 4670, 5144, 5759, 6227, 6993, 7524, 8307, 8993, 9803, 10529, 11630, 12374, 13373, 14311, 15559, 16465, 17867, 18860, 20273, 21579, 23016]

cp's OEIS Frontend

A366984 a(n) = Sum_{k=1..n} binomial(k+2,2) * floor(n/k).

Table of values

List of values