A305575 - cp's OEIS frontend

A305575 List points (x,y) having integer coordinates, sorted first by radial coordinate r and in case of ties, by polar angle 0 <= phi < 2*Pi in a polar coordinate system. Sequence gives x-coordinates.

n	a(n)
0	0
1	1
2	0
3	-1
4	0
5	1
6	-1
7	-1
8	1
9	2
10	0
11	-2
12	0
13	2
14	1
15	-1
16	-2
17	-2
18	-1
19	1
20	2
21	2
22	-2
23	-2
24	2
25	3
26	0
27	-3
28	0
29	3
30	1
31	-1
32	-3
33	-3
34	-1
35	1
36	3
37	3
38	2
39	-2
40	-3
41	-3
42	-2
43	2
44	3
45	4
46	0
47	-4
48	0
49	4
50	1
51	-1
52	-4
53	-4
54	-1
55	1
56	4
57	3
58	-3
59	-3
60	3
61	4
62	2
63	-2
64	-4
65	-4
66	-2
67	2
68	4
69	5
70	4
71	3
72	0
73	-3
74	-4
75	-5
76	-4
77	-3
78	0
79	3
80	4
81	5
82	1
83	-1

[0, 1, 0, -1, 0, 1, -1, -1, 1, 2, 0, -2, 0, 2, 1, -1, -2, -2, -1, 1, 2, 2, -2, -2, 2, 3, 0, -3, 0, 3, 1, -1, -3, -3, -1, 1, 3, 3, 2, -2, -3, -3, -2, 2, 3, 4, 0, -4, 0, 4, 1, -1, -4, -4, -1, 1, 4, 3, -3, -3, 3, 4, 2, -2, -4, -4, -2, 2, 4, 5, 4, 3, 0, -3, -4, -5, -4, -3, 0, 3, 4, 5, 1, -1]

cp's OEIS Frontend

A305575 List points (x,y) having integer coordinates, sorted first by radial coordinate r and in case of ties, by polar angle 0 <= phi < 2*Pi in a polar coordinate system. Sequence gives x-coordinates.

Table of values

List of values

n	a(n)
0	0
1	1
2	0
3	-1
4	0
5	1
6	-1
7	-1
8	1
9	2
10	0
11	-2
12	0
13	2
14	1
15	-1
16	-2
17	-2
18	-1
19	1
20	2
21	2
22	-2
23	-2
24	2
25	3
26	0
27	-3
28	0
29	3
30	1
31	-1
32	-3
33	-3
34	-1
35	1
36	3
37	3
38	2
39	-2
40	-3
41	-3
42	-2
43	2
44	3
45	4
46	0
47	-4
48	0
49	4
50	1
51	-1
52	-4
53	-4
54	-1
55	1
56	4
57	3
58	-3
59	-3
60	3
61	4
62	2
63	-2
64	-4
65	-4
66	-2
67	2
68	4
69	5
70	4
71	3
72	0
73	-3
74	-4
75	-5
76	-4
77	-3
78	0
79	3
80	4
81	5
82	1
83	-1

n	a(n)
0	0
1	1
2	0
3	-1
4	0
5	1
6	-1
7	-1
8	1
9	2
10	0
11	-2
12	0
13	2
14	1
15	-1
16	-2
17	-2
18	-1
19	1
20	2
21	2
22	-2
23	-2
24	2
25	3
26	0
27	-3
28	0
29	3
30	1
31	-1
32	-3
33	-3
34	-1
35	1
36	3
37	3
38	2
39	-2
40	-3
41	-3
42	-2
43	2
44	3
45	4
46	0
47	-4
48	0
49	4
50	1
51	-1
52	-4
53	-4
54	-1
55	1
56	4
57	3
58	-3
59	-3
60	3
61	4
62	2
63	-2
64	-4
65	-4
66	-2
67	2
68	4
69	5
70	4
71	3
72	0
73	-3
74	-4
75	-5
76	-4
77	-3
78	0
79	3
80	4
81	5
82	1
83	-1

n	a(n)
0	0
1	1
2	0
3	-1
4	0
5	1
6	-1
7	-1
8	1
9	2
10	0
11	-2
12	0
13	2
14	1
15	-1
16	-2
17	-2
18	-1
19	1
20	2
21	2
22	-2
23	-2
24	2
25	3
26	0
27	-3
28	0
29	3
30	1
31	-1
32	-3
33	-3
34	-1
35	1
36	3
37	3
38	2
39	-2
40	-3
41	-3
42	-2
43	2
44	3
45	4
46	0
47	-4
48	0
49	4
50	1
51	-1
52	-4
53	-4
54	-1
55	1
56	4
57	3
58	-3
59	-3
60	3
61	4
62	2
63	-2
64	-4
65	-4
66	-2
67	2
68	4
69	5
70	4
71	3
72	0
73	-3
74	-4
75	-5
76	-4
77	-3
78	0
79	3
80	4
81	5
82	1
83	-1