A350222 - cp's OEIS frontend

A350222 a(n) = Sum_{k=1..n} (-1)^(k+1) * floor((n/k)^3).

n	a(n)
1	1
2	7
3	25
4	57
5	114
6	194
7	310
8	460
9	658
10	902
11	1200
12	1557
13	1981
14	2474
15	3045
16	3690
17	4431
18	5257
19	6186
20	7212
21	8350
22	9601
23	10969
24	12461
25	14088
26	15844
27	17746
28	19791
29	21990
30	24343
31	26859
32	29539
33	32399
34	35434
35	38655
36	42060
37	45671
38	49468
39	53480
40	57698
41	62137
42	66793
43	71681

[1, 7, 25, 57, 114, 194, 310, 460, 658, 902, 1200, 1557, 1981, 2474, 3045, 3690, 4431, 5257, 6186, 7212, 8350, 9601, 10969, 12461, 14088, 15844, 17746, 19791, 21990, 24343, 26859, 29539, 32399, 35434, 38655, 42060, 45671, 49468, 53480, 57698, 62137, 66793, 71681]

cp's OEIS Frontend

A350222 a(n) = Sum_{k=1..n} (-1)^(k+1) * floor((n/k)^3).

Table of values

List of values