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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.

A071940 Number of 1's among the first n terms of the simple continued fraction for Pi.

Table of values

n a(n)
1 0
2 0
3 0
4 1
5 1
6 2
7 3
8 4
9 4
10 5
11 5
12 6
13 6
14 6
15 7
16 8
17 8
18 8
19 8
20 8
21 9
22 9
23 9
24 10
25 11
26 11
27 11
28 11
29 12
30 12
31 12
32 12
33 12
34 12
35 13
36 13
37 13
38 13
39 13
40 13
41 14
42 15
43 15
44 15
45 16
46 16
47 17
48 17
49 17
50 17
51 18
52 18
53 19
54 20
55 20
56 21
57 22
58 23
59 23
60 24
61 25
62 25
63 26
64 27
65 27
66 28
67 28
68 29
69 30
70 30
71 30
72 30
73 30
74 31
75 31
76 31
77 31

List of values

[0, 0, 0, 1, 1, 2, 3, 4, 4, 5, 5, 6, 6, 6, 7, 8, 8, 8, 8, 8, 9, 9, 9, 10, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 14, 15, 15, 15, 16, 16, 17, 17, 17, 17, 18, 18, 19, 20, 20, 21, 22, 23, 23, 24, 25, 25, 26, 27, 27, 28, 28, 29, 30, 30, 30, 30, 30, 31, 31, 31, 31]

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