A051132 - cp's OEIS frontend

A051132 Number of ordered pairs of integers (x,y) with x^2+y^2 < n^2.

n	a(n)
0	0
1	1
2	9
3	25
4	45
5	69
6	109
7	145
8	193
9	249
10	305
11	373
12	437
13	517
14	609
15	697
16	793
17	889
18	1005
19	1125
20	1245
21	1369
22	1513
23	1649
24	1789
25	1941
26	2109
27	2285
28	2449
29	2617
30	2809
31	2997
32	3205
33	3405
34	3613
35	3841
36	4049
37	4281
38	4509
39	4765
40	5013
41	5249
42	5521
43	5785
44	6073
45	6349
46	6621

[0, 1, 9, 25, 45, 69, 109, 145, 193, 249, 305, 373, 437, 517, 609, 697, 793, 889, 1005, 1125, 1245, 1369, 1513, 1649, 1789, 1941, 2109, 2285, 2449, 2617, 2809, 2997, 3205, 3405, 3613, 3841, 4049, 4281, 4509, 4765, 5013, 5249, 5521, 5785, 6073, 6349, 6621]

cp's OEIS Frontend

A051132 Number of ordered pairs of integers (x,y) with x^2+y^2 < n^2.

Table of values

List of values