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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.

A265808 Numerators of lower primes-only best approximates (POBAs) to Pi; see Comments.

Table of values

n a(n)
1 5
2 13
3 19
4 31
5 37
6 53
7 97
8 191
9 223
10 757
11 977
12 4483
13 5237
14 9497
15 14423
16 18061
17 30841
18 45751
19 47881
20 60661
21 137341
22 162901
23 177811
24 536273
25 557573
26 577453
27 579583
28 609403
29 610823
30 833719
31 43354453
32 45230587
33 104426411
34 111304859
35 120059441
36 185091653
37 821656877
38 1302520019

List of values

[5, 13, 19, 31, 37, 53, 97, 191, 223, 757, 977, 4483, 5237, 9497, 14423, 18061, 30841, 45751, 47881, 60661, 137341, 162901, 177811, 536273, 557573, 577453, 579583, 609403, 610823, 833719, 43354453, 45230587, 104426411, 111304859, 120059441, 185091653, 821656877, 1302520019]

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

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