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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.

A091657 Length of the smallest prefix of the continued fraction expansion for Pi that includes each of 1..n.

Table of values

n a(n)
1 4
2 9
3 9
4 30
5 40
6 40
7 40
8 44
9 130
10 130
11 276
12 276
13 276
14 276
15 276
16 276
17 647
18 647
19 647
20 647
21 647
22 647
23 647
24 647
25 791
26 791
27 791
28 791
29 791
30 791
31 878
32 878
33 878
34 878
35 1008
36 1008
37 1008
38 3041
39 3041
40 3041
41 3041
42 3041
43 3041
44 3041
45 3041
46 3200
47 3200
48 3200
49 3200
50 3200
51 3200

List of values

[4, 9, 9, 30, 40, 40, 40, 44, 130, 130, 276, 276, 276, 276, 276, 276, 647, 647, 647, 647, 647, 647, 647, 647, 791, 791, 791, 791, 791, 791, 878, 878, 878, 878, 1008, 1008, 1008, 3041, 3041, 3041, 3041, 3041, 3041, 3041, 3041, 3200, 3200, 3200, 3200, 3200, 3200]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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