A037048 - cp's OEIS frontend

A037048 Number of pairs {i,j}, i>1, j>1, such that ij < n^2.

n	a(n)
2	0
3	3
4	9
5	20
6	33
7	54
8	77
9	108
10	142
11	186
12	228
13	285
14	342
15	409
16	481
17	563
18	644
19	742
20	837
21	946
22	1060
23	1184
24	1308
25	1449
26	1592
27	1744
28	1903
29	2076
30	2240
31	2432
32	2618
33	2818
34	3028
35	3246
36	3461
37	3702
38	3940
39	4192
40	4444
41	4719
42	4980
43	5274
44	5559

[0, 3, 9, 20, 33, 54, 77, 108, 142, 186, 228, 285, 342, 409, 481, 563, 644, 742, 837, 946, 1060, 1184, 1308, 1449, 1592, 1744, 1903, 2076, 2240, 2432, 2618, 2818, 3028, 3246, 3461, 3702, 3940, 4192, 4444, 4719, 4980, 5274, 5559]

cp's OEIS Frontend

A037048 Number of pairs {i,j}, i>1, j>1, such that ij < n^2.

Table of values

List of values