A275609 - cp's OEIS frontend

A275609 Square spiral in which each new term is the least nonnegative integer distinct from its (already assigned) eight neighbors.

n	a(n)
0	0
1	1
2	2
3	3
4	1
5	2
6	1
7	3
8	2
9	0
10	3
11	0
12	1
13	4
14	0
15	2
16	0
17	3
18	0
19	3
20	0
21	2
22	0
23	1
24	3
25	1
26	2
27	1
28	2
29	3
30	0
31	2
32	3
33	1
34	3
35	1
36	2
37	4
38	1
39	2
40	1
41	2
42	1
43	3
44	1
45	3
46	2
47	0
48	2
49	0
50	3
51	0
52	3
53	0
54	1
55	2
56	1
57	3
58	1
59	0
60	2
61	0
62	4
63	0
64	1
65	3
66	0
67	3
68	0
69	3
70	0
71	3
72	0
73	2
74	0
75	2
76	0
77	1
78	3
79	1
80	3
81	1
82	2
83	1
84	2
85	1
86	2
87	3
88	0
89	3
90	0
91	2
92	0
93	2
94	3
95	1
96	3
97	1
98	2
99	3
100	0
101	2
102	4
103	1
104	2

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

cp's OEIS Frontend

A275609 Square spiral in which each new term is the least nonnegative integer distinct from its (already assigned) eight neighbors.

Table of values

List of values

n	a(n)
0	0
1	1
2	2
3	3
4	1
5	2
6	1
7	3
8	2
9	0
10	3
11	0
12	1
13	4
14	0
15	2
16	0
17	3
18	0
19	3
20	0
21	2
22	0
23	1
24	3
25	1
26	2
27	1
28	2
29	3
30	0
31	2
32	3
33	1
34	3
35	1
36	2
37	4
38	1
39	2
40	1
41	2
42	1
43	3
44	1
45	3
46	2
47	0
48	2
49	0
50	3
51	0
52	3
53	0
54	1
55	2
56	1
57	3
58	1
59	0
60	2
61	0
62	4
63	0
64	1
65	3
66	0
67	3
68	0
69	3
70	0
71	3
72	0
73	2
74	0
75	2
76	0
77	1
78	3
79	1
80	3
81	1
82	2
83	1
84	2
85	1
86	2
87	3
88	0
89	3
90	0
91	2
92	0
93	2
94	3
95	1
96	3
97	1
98	2
99	3
100	0
101	2
102	4
103	1
104	2

n	a(n)
0	0
1	1
2	2
3	3
4	1
5	2
6	1
7	3
8	2
9	0
10	3
11	0
12	1
13	4
14	0
15	2
16	0
17	3
18	0
19	3
20	0
21	2
22	0
23	1
24	3
25	1
26	2
27	1
28	2
29	3
30	0
31	2
32	3
33	1
34	3
35	1
36	2
37	4
38	1
39	2
40	1
41	2
42	1
43	3
44	1
45	3
46	2
47	0
48	2
49	0
50	3
51	0
52	3
53	0
54	1
55	2
56	1
57	3
58	1
59	0
60	2
61	0
62	4
63	0
64	1
65	3
66	0
67	3
68	0
69	3
70	0
71	3
72	0
73	2
74	0
75	2
76	0
77	1
78	3
79	1
80	3
81	1
82	2
83	1
84	2
85	1
86	2
87	3
88	0
89	3
90	0
91	2
92	0
93	2
94	3
95	1
96	3
97	1
98	2
99	3
100	0
101	2
102	4
103	1
104	2

n	a(n)
0	0
1	1
2	2
3	3
4	1
5	2
6	1
7	3
8	2
9	0
10	3
11	0
12	1
13	4
14	0
15	2
16	0
17	3
18	0
19	3
20	0
21	2
22	0
23	1
24	3
25	1
26	2
27	1
28	2
29	3
30	0
31	2
32	3
33	1
34	3
35	1
36	2
37	4
38	1
39	2
40	1
41	2
42	1
43	3
44	1
45	3
46	2
47	0
48	2
49	0
50	3
51	0
52	3
53	0
54	1
55	2
56	1
57	3
58	1
59	0
60	2
61	0
62	4
63	0
64	1
65	3
66	0
67	3
68	0
69	3
70	0
71	3
72	0
73	2
74	0
75	2
76	0
77	1
78	3
79	1
80	3
81	1
82	2
83	1
84	2
85	1
86	2
87	3
88	0
89	3
90	0
91	2
92	0
93	2
94	3
95	1
96	3
97	1
98	2
99	3
100	0
101	2
102	4
103	1
104	2