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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A220098 Manhattan distances between 2n and 1 in the double spiral with positive integers and 1 at the center.

Table of values

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

List of values

[1, 2, 1, 2, 3, 2, 3, 4, 3, 2, 3, 4, 5, 4, 3, 4, 5, 6, 5, 4, 3, 4, 5, 6, 7, 6, 5, 4, 5, 6, 7, 8, 7, 6, 5, 4, 5, 6, 7, 8, 9, 8, 7, 6, 5, 6, 7, 8, 9, 10, 9, 8, 7, 6, 5, 6, 7, 8, 9, 10, 11, 10, 9, 8, 7, 6, 7, 8, 9, 10, 11, 12, 11, 10, 9, 8, 7, 6, 7, 8, 9, 10, 11, 12, 13]

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