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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.

A023189 Conjecturally, number of infinitely recurring prime patterns of width 2n-1.

Table of values

n a(n)
1 1
2 1
3 1
4 3
5 4
6 4
7 14
8 13
9 16
10 48
11 55
12 50
13 173
14 148
15 147
16 665
17 580
18 559
19 1920
20 1447
21 1975
22 6240
23 4228
24 5689
25 15764
26 17562
27 14332
28 46207
29 39071
30 35317
31 172311
32 134752
33 110758
34 381384
35 299971
36 479935
37 1154568
38 733900
39 1027967
40 2581763
41 2636545
42 2333308
43 8369027
44 5516720
45 6043194

List of values

[1, 1, 1, 3, 4, 4, 14, 13, 16, 48, 55, 50, 173, 148, 147, 665, 580, 559, 1920, 1447, 1975, 6240, 4228, 5689, 15764, 17562, 14332, 46207, 39071, 35317, 172311, 134752, 110758, 381384, 299971, 479935, 1154568, 733900, 1027967, 2581763, 2636545, 2333308, 8369027, 5516720, 6043194]

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

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