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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.

A265813 Denominators of primes-only best approximates (POBAs) to Pi; see Comments.

Table of values

n a(n)
1 2
2 2
3 5
4 7
5 13
6 53
7 67
8 71
9 197
10 241
11 311
12 353
13 1427
14 1667
15 1723
16 3023
17 4591
18 5113
19 5749
20 9817
21 14563
22 15241
23 19309
24 43717
25 51853
26 56599
27 67447
28 199403
29 265381
30 12141887
31 12871487
32 14397343
33 29723689
34 36424757
35 38216107
36 58916503
37 110667493
38 549157573
39 552607639

List of values

[2, 2, 5, 7, 13, 53, 67, 71, 197, 241, 311, 353, 1427, 1667, 1723, 3023, 4591, 5113, 5749, 9817, 14563, 15241, 19309, 43717, 51853, 56599, 67447, 199403, 265381, 12141887, 12871487, 14397343, 29723689, 36424757, 38216107, 58916503, 110667493, 549157573, 552607639]

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

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