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.

A097443 Half-period primes, i.e., primes p for which the decimal expansion of 1/p has period (p-1)/2.

Table of values

n a(n)
1 3
2 13
3 31
4 43
5 67
6 71
7 83
8 89
9 107
10 151
11 157
12 163
13 191
14 197
15 199
16 227
17 283
18 293
19 307
20 311
21 347
22 359
23 373
24 401
25 409
26 431
27 439
28 443
29 467
30 479
31 523
32 557
33 563
34 569
35 587
36 599
37 601
38 631
39 653
40 677
41 683
42 719
43 761
44 787
45 827
46 839
47 877
48 881
49 883
50 911
51 919
52 929
53 947
54 991

List of values

[3, 13, 31, 43, 67, 71, 83, 89, 107, 151, 157, 163, 191, 197, 199, 227, 283, 293, 307, 311, 347, 359, 373, 401, 409, 431, 439, 443, 467, 479, 523, 557, 563, 569, 587, 599, 601, 631, 653, 677, 683, 719, 761, 787, 827, 839, 877, 881, 883, 911, 919, 929, 947, 991]