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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.

A265809 Denominators of lower primes-only best approximates (POBAs) to Pi; see Comments.

Table of values

n a(n)
1 2
2 5
3 7
4 11
5 13
6 17
7 31
8 61
9 71
10 241
11 311
12 1427
13 1667
14 3023
15 4591
16 5749
17 9817
18 14563
19 15241
20 19309
21 43717
22 51853
23 56599
24 170701
25 177481
26 183809
27 184487
28 193979
29 194431
30 265381
31 13800151
32 14397343
33 33239959
34 35429437
35 38216107
36 58916503
37 261541507
38 414604999
39 549157573

List of values

[2, 5, 7, 11, 13, 17, 31, 61, 71, 241, 311, 1427, 1667, 3023, 4591, 5749, 9817, 14563, 15241, 19309, 43717, 51853, 56599, 170701, 177481, 183809, 184487, 193979, 194431, 265381, 13800151, 14397343, 33239959, 35429437, 38216107, 58916503, 261541507, 414604999, 549157573]

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

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