A363665 - cp's OEIS frontend

A363665 Starting with a(1) = 1, the lexicographically earliest sequence of integers on a square spiral such that every number equals the sum of its eight adjacent neighbors.

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

[1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, -2, 0, 0, 1, -2, 0, 0, 0, -1, 0, 0, 0, -2, 2, 0, 0, -1, 2, -3, 0, 0, 3, -2, 2, -3, 0, 0, 3, -1, -1, 1, 0, 0, 1, 0, 0, -5, 8, 0, 0, -5, 4, 0, 4, -7, 0, 0, 6, -6, 4, -4, 8, -7, 0, 0, 2, -2, 4, -4, 0, 7, 0, 0, -8, 6, 3, -8, 10, -15, 16, 0, 0, -9, 6, -5, 7, -8, 13]

cp's OEIS Frontend

A363665 Starting with a(1) = 1, the lexicographically earliest sequence of integers on a square spiral such that every number equals the sum of its eight adjacent neighbors.

Table of values

List of values

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

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

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