A275485 - cp's OEIS frontend

A275485 Number of integer lattice points from an n X n square in R^2 centered at the origin that are closer (measured using the Euclidean metric) to the origin than to any of the four sides of the square.

n	a(n)
1	1
2	1
3	1
4	1
5	9
6	9
7	9
8	9
9	21
10	25
11	25
12	25
13	37
14	45
15	49
16	49
17	69
18	69
19	77
20	81
21	101
22	109
23	117
24	117
25	141
26	149
27	157
28	165
29	189
30	197
31	205
32	213
33	241
34	261
35	269
36	269
37	305
38	321
39	333
40	341
41	377
42	385
43	401
44	413
45	449
46	465
47	481
48	489
49	529
50	545

[1, 1, 1, 1, 9, 9, 9, 9, 21, 25, 25, 25, 37, 45, 49, 49, 69, 69, 77, 81, 101, 109, 117, 117, 141, 149, 157, 165, 189, 197, 205, 213, 241, 261, 269, 269, 305, 321, 333, 341, 377, 385, 401, 413, 449, 465, 481, 489, 529, 545]

cp's OEIS Frontend

A275485 Number of integer lattice points from an n X n square in R^2 centered at the origin that are closer (measured using the Euclidean metric) to the origin than to any of the four sides of the square.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	1
5	9
6	9
7	9
8	9
9	21
10	25
11	25
12	25
13	37
14	45
15	49
16	49
17	69
18	69
19	77
20	81
21	101
22	109
23	117
24	117
25	141
26	149
27	157
28	165
29	189
30	197
31	205
32	213
33	241
34	261
35	269
36	269
37	305
38	321
39	333
40	341
41	377
42	385
43	401
44	413
45	449
46	465
47	481
48	489
49	529
50	545

n	a(n)
1	1
2	1
3	1
4	1
5	9
6	9
7	9
8	9
9	21
10	25
11	25
12	25
13	37
14	45
15	49
16	49
17	69
18	69
19	77
20	81
21	101
22	109
23	117
24	117
25	141
26	149
27	157
28	165
29	189
30	197
31	205
32	213
33	241
34	261
35	269
36	269
37	305
38	321
39	333
40	341
41	377
42	385
43	401
44	413
45	449
46	465
47	481
48	489
49	529
50	545

n	a(n)
1	1
2	1
3	1
4	1
5	9
6	9
7	9
8	9
9	21
10	25
11	25
12	25
13	37
14	45
15	49
16	49
17	69
18	69
19	77
20	81
21	101
22	109
23	117
24	117
25	141
26	149
27	157
28	165
29	189
30	197
31	205
32	213
33	241
34	261
35	269
36	269
37	305
38	321
39	333
40	341
41	377
42	385
43	401
44	413
45	449
46	465
47	481
48	489
49	529
50	545