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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.

A257321 Construct spiral of numbers on square grid as in Comments; sequence gives terms along the "2" arm.

Table of values

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

List of values

[2, 5, 7, 5, 3, 11, 5, 2, 7, 2, 3, 2, 5, 2, 5, 7, 3, 5, 7, 2, 5, 7, 11, 3, 7, 3, 5, 3, 5, 3, 5, 3, 7, 3, 2, 5, 2, 7, 2, 3, 5, 7, 2, 7, 2, 7, 2, 7, 2, 5, 11, 2, 5, 2, 3, 2, 5, 2, 5, 7, 3, 7, 3, 7, 3, 5, 3, 5, 3, 5, 7, 2, 5, 7, 3, 7, 3, 7, 3, 2, 5, 2, 7, 2, 3, 5]

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