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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.

A234902 a(n)*Pi is the total length of irregular spiral (center points: 1, 2, 3) after n rotations.

Table of values

n a(n)
1 2
2 9
3 13
4 17
5 24
6 26
7 33
8 37
9 41
10 48
11 50
12 57
13 61
14 65
15 72
16 74
17 81
18 85
19 89
20 96
21 98
22 105
23 109
24 113
25 120
26 122
27 129
28 133
29 137
30 144
31 146
32 153
33 157
34 161
35 168
36 170
37 177
38 181
39 185
40 192
41 194
42 201
43 205
44 209
45 216
46 218
47 225
48 229
49 233
50 240
51 242
52 249
53 253
54 257

List of values

[2, 9, 13, 17, 24, 26, 33, 37, 41, 48, 50, 57, 61, 65, 72, 74, 81, 85, 89, 96, 98, 105, 109, 113, 120, 122, 129, 133, 137, 144, 146, 153, 157, 161, 168, 170, 177, 181, 185, 192, 194, 201, 205, 209, 216, 218, 225, 229, 233, 240, 242, 249, 253, 257]