A242118 - cp's OEIS frontend

A242118 Number of unit squares that intersect the circumference of a circle of radius n centered at (0,0).

n	a(n)
0	0
1	4
2	12
3	20
4	28
5	28
6	44
7	52
8	60
9	68
10	68
11	84
12	92
13	92
14	108
15	108
16	124
17	124
18	140
19	148
20	148
21	164
22	172
23	180
24	188
25	180
26	196
27	212
28	220
29	220
30	228
31	244
32	252
33	260
34	260
35	268
36	284
37	284
38	300
39	300
40	308
41	316
42	332
43	340
44	348
45	348
46	364
47	372
48	380
49	388
50	380

[0, 4, 12, 20, 28, 28, 44, 52, 60, 68, 68, 84, 92, 92, 108, 108, 124, 124, 140, 148, 148, 164, 172, 180, 188, 180, 196, 212, 220, 220, 228, 244, 252, 260, 260, 268, 284, 284, 300, 300, 308, 316, 332, 340, 348, 348, 364, 372, 380, 388, 380]

cp's OEIS Frontend

A242118 Number of unit squares that intersect the circumference of a circle of radius n centered at (0,0).

Table of values

List of values

n	a(n)
0	0
1	4
2	12
3	20
4	28
5	28
6	44
7	52
8	60
9	68
10	68
11	84
12	92
13	92
14	108
15	108
16	124
17	124
18	140
19	148
20	148
21	164
22	172
23	180
24	188
25	180
26	196
27	212
28	220
29	220
30	228
31	244
32	252
33	260
34	260
35	268
36	284
37	284
38	300
39	300
40	308
41	316
42	332
43	340
44	348
45	348
46	364
47	372
48	380
49	388
50	380

n	a(n)
0	0
1	4
2	12
3	20
4	28
5	28
6	44
7	52
8	60
9	68
10	68
11	84
12	92
13	92
14	108
15	108
16	124
17	124
18	140
19	148
20	148
21	164
22	172
23	180
24	188
25	180
26	196
27	212
28	220
29	220
30	228
31	244
32	252
33	260
34	260
35	268
36	284
37	284
38	300
39	300
40	308
41	316
42	332
43	340
44	348
45	348
46	364
47	372
48	380
49	388
50	380

n	a(n)
0	0
1	4
2	12
3	20
4	28
5	28
6	44
7	52
8	60
9	68
10	68
11	84
12	92
13	92
14	108
15	108
16	124
17	124
18	140
19	148
20	148
21	164
22	172
23	180
24	188
25	180
26	196
27	212
28	220
29	220
30	228
31	244
32	252
33	260
34	260
35	268
36	284
37	284
38	300
39	300
40	308
41	316
42	332
43	340
44	348
45	348
46	364
47	372
48	380
49	388
50	380