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.

A380609 Primes a single step away from a cycle under the mapping p-> gpf(2*p+1).

Table of values

n a(n)
1 2
2 17
3 31
4 37
5 67
6 71
7 73
8 97
9 103
10 137
11 149
12 157
13 181
14 199
15 211
16 227
17 241
18 269
19 283
20 313
21 337
22 367
23 379
24 409
25 487
26 541
27 563
28 577
29 587
30 607
31 617
32 643
33 661
34 769
35 787
36 857
37 877
38 907
39 929
40 937
41 977
42 997
43 1039
44 1093
45 1151
46 1187
47 1237
48 1453
49 1543
50 1567
51 1579
52 1621

List of values

[2, 17, 31, 37, 67, 71, 73, 97, 103, 137, 149, 157, 181, 199, 211, 227, 241, 269, 283, 313, 337, 367, 379, 409, 487, 541, 563, 577, 587, 607, 617, 643, 661, 769, 787, 857, 877, 907, 929, 937, 977, 997, 1039, 1093, 1151, 1187, 1237, 1453, 1543, 1567, 1579, 1621]