A228172 - cp's OEIS frontend

A228172 Number of integer pairs (x,y) such that 0<=y<=x, x>0, and x^2+y^2<=n^2.

n	a(n)
1	1
2	3
3	6
4	9
5	14
6	19
7	24
8	31
9	39
10	48
11	56
12	65
13	77
14	88
15	101
16	113
17	127
18	141
19	157
20	174
21	189
22	208
23	226
24	244
25	266
26	287
27	309
28	330
29	353
30	378
31	401
32	428
33	454
34	482
35	511
36	537
37	568
38	596
39	630
40	662
41	692
42	726
43	760
44	797
45	833
46	867
47	905
48	942
49	982
50	1023
51	1065
52	1106
53	1146
54	1189
55	1231
56	1278
57	1322
58	1369
59	1414
60	1462
61	1512

[1, 3, 6, 9, 14, 19, 24, 31, 39, 48, 56, 65, 77, 88, 101, 113, 127, 141, 157, 174, 189, 208, 226, 244, 266, 287, 309, 330, 353, 378, 401, 428, 454, 482, 511, 537, 568, 596, 630, 662, 692, 726, 760, 797, 833, 867, 905, 942, 982, 1023, 1065, 1106, 1146, 1189, 1231, 1278, 1322, 1369, 1414, 1462, 1512]

cp's OEIS Frontend

A228172 Number of integer pairs (x,y) such that 0<=y<=x, x>0, and x^2+y^2<=n^2.

Table of values

List of values