A305576 - cp's OEIS frontend

A305576 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 y-coordinates.

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

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

cp's OEIS Frontend

A305576 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 y-coordinates.

Table of values

List of values

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

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

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