A366985 - cp's OEIS frontend

A366985 a(n) = Sum_{k=1..n} binomial(k+3,3) * floor(n/k).

n	a(n)
1	4
2	18
3	42
4	91
5	151
6	269
7	393
8	607
9	851
10	1207
11	1575
12	2183
13	2747
14	3561
15	4457
16	5640
17	6784
18	8452
19	9996
20	12158
21	14326
22	17004
23	19608
24	23306
25	26642
26	30870
27	35174
28	40518
29	45482
30	52214
31	58202
32	65930
33	73458
34	82382
35	90998
36	102295
37	112179
38	124393
39	136457
40	151125
41	164373

[4, 18, 42, 91, 151, 269, 393, 607, 851, 1207, 1575, 2183, 2747, 3561, 4457, 5640, 6784, 8452, 9996, 12158, 14326, 17004, 19608, 23306, 26642, 30870, 35174, 40518, 45482, 52214, 58202, 65930, 73458, 82382, 90998, 102295, 112179, 124393, 136457, 151125, 164373]

cp's OEIS Frontend

A366985 a(n) = Sum_{k=1..n} binomial(k+3,3) * floor(n/k).

Table of values

List of values