A277214 - cp's OEIS frontend

A277214 a(n) is the Manhattan distance between n and 1 in a 3-dimensional cubic spiral of positive integers with 1..8 at the center (illustration in the comments).

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

[0, 1, 2, 1, 2, 3, 2, 1, 2, 3, 4, 3, 4, 3, 4, 3, 4, 5, 4, 5, 6, 5, 4, 5, 4, 3, 2, 3, 2, 3, 4, 3, 4, 5, 4, 3, 2, 3, 4, 3, 2, 3, 2, 1, 2, 1, 2, 3, 4, 3, 4, 5, 4, 3, 4, 3, 2, 3, 2, 3, 2, 3, 2, 1, 2]

cp's OEIS Frontend

A277214 a(n) is the Manhattan distance between n and 1 in a 3-dimensional cubic spiral of positive integers with 1..8 at the center (illustration in the comments).

Table of values

List of values

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

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

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