A364970 - cp's OEIS frontend

A364970 a(n) = Sum_{k=1..n} binomial(floor(n/k)+2,3).

n	a(n)
1	1
2	5
3	12
4	26
5	42
6	73
7	102
8	152
9	204
10	278
11	345
12	464
13	556
14	693
15	835
16	1021
17	1175
18	1422
19	1613
20	1907
21	2173
22	2496
23	2773
24	3228
25	3569
26	4015
27	4445
28	4998
29	5434
30	6120
31	6617
32	7331
33	7965
34	8717
35	9391
36	10392
37	11096
38	12031
39	12909
40	14059
41	14921
42	16219
43	17166
44	18489
45	19711
46	21072
47	22201

[1, 5, 12, 26, 42, 73, 102, 152, 204, 278, 345, 464, 556, 693, 835, 1021, 1175, 1422, 1613, 1907, 2173, 2496, 2773, 3228, 3569, 4015, 4445, 4998, 5434, 6120, 6617, 7331, 7965, 8717, 9391, 10392, 11096, 12031, 12909, 14059, 14921, 16219, 17166, 18489, 19711, 21072, 22201]

cp's OEIS Frontend

A364970 a(n) = Sum_{k=1..n} binomial(floor(n/k)+2,3).

Table of values

List of values