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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.

A259442 a(n) is the least number of sides of a regular circumscribed k-gon whose perimeter yields Pi to within 1/10^n.

Table of values

n a(n)
0 4
1 11
2 33
3 102
4 322
5 1017
6 3215
7 10167
8 32149
9 101664
10 321488
11 1016633
12 3214876
13 10166330
14 32148757
15 101663296
16 321487567
17 1016632951
18 3214875668
19 10166329505
20 32148756680
21 101663295049
22 321487566791
23 1016632950485
24 3214875667907
25 10166329504841
26 32148756679070
27 101663295048410

List of values

[4, 11, 33, 102, 322, 1017, 3215, 10167, 32149, 101664, 321488, 1016633, 3214876, 10166330, 32148757, 101663296, 321487567, 1016632951, 3214875668, 10166329505, 32148756680, 101663295049, 321487566791, 1016632950485, 3214875667907, 10166329504841, 32148756679070, 101663295048410]

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

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