cp's OEIS Frontend

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.

A244094 Rounded down ratio of area of a unit circle and one of the circles inscribed between a regular n-gon and a circumscribed unit circle.

Table of values

n a(n)
3 16
4 46
5 109
6 222
7 407
8 690
9 1099
10 1669
11 2437
12 3445
13 4737
14 6363
15 8376
16 10834
17 13797
18 17330
19 21503
20 26389
21 32064
22 38608
23 46108
24 54651
25 64331
26 75243
27 87489
28 101172
29 116402
30 133290
31 151953
32 172511
33 195088
34 219813
35 246817
36 276236
37 308211
38 342885
39 380407
40 420927
41 464601
42 511590

List of values

[16, 46, 109, 222, 407, 690, 1099, 1669, 2437, 3445, 4737, 6363, 8376, 10834, 13797, 17330, 21503, 26389, 32064, 38608, 46108, 54651, 64331, 75243, 87489, 101172, 116402, 133290, 151953, 172511, 195088, 219813, 246817, 276236, 308211, 342885, 380407, 420927, 464601, 511590]

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

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