A366311 - cp's OEIS frontend

A366311 Lexicographically earliest sequence of positive integers on a square spiral such that there are no palindromes with length > 2 in any row, column or diagonal.

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

[1, 1, 1, 1, 2, 2, 3, 2, 4, 3, 3, 4, 2, 3, 4, 4, 2, 3, 3, 4, 2, 3, 4, 4, 2, 2, 2, 5, 3, 2, 2, 2, 4, 5, 3, 2, 4, 1, 1, 5, 4, 1, 1, 1, 5, 5, 6, 1, 1, 2, 1, 5, 4, 1, 1, 3, 3, 1, 5, 5, 3, 2, 1, 3, 3, 1, 4, 5, 1, 2, 4, 3, 1, 2, 3, 5, 1, 1, 3, 3, 4, 1, 3, 6, 4, 1, 1]

cp's OEIS Frontend

A366311 Lexicographically earliest sequence of positive integers on a square spiral such that there are no palindromes with length > 2 in any row, column or diagonal.

Table of values

List of values

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

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

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