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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.

A381781 a(n) = k where k*Pi is the solution to sin(x) = 0 obtained using Newton's method starting from x = n.

Table of values

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

List of values

[0, 0, 1, 1, 1, 3, 2, 2, 5, 3, 3, 74, 4, 4, 2, 5, 5, 4, 6, 6, 6, 7, 7, 7, 8, 8, 8, 10, 9, 9, 13, 10, 10, 30, 11, 11, 9, 12, 12, 11, 13, 13, 13, 14, 14, 14, 15, 15, 15, 25, 16, 16, 14, 17, 17, 32, 18, 18, 16, 19, 19, 18, 20, 20, 17, 21, 21, 21, 22, 22, 22, 25, 23, 23, 26]

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