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.

A230484 Strong pseudoprimes (base 2) that become prime when two is added.

Table of values

n a(n)
1 253241
2 280601
3 580337
4 1207361
5 1678541
6 1909001
7 2419385
8 5173601
9 16324001
10 18073817
11 22849481
12 25080101
13 43363601
14 60155201
15 67194401
16 82870517
17 85519337
18 97924217
19 100943201
20 102004421
21 104857391
22 116090081
23 128987429
24 134696801
25 135969401
26 145348529

List of values

[253241, 280601, 580337, 1207361, 1678541, 1909001, 2419385, 5173601, 16324001, 18073817, 22849481, 25080101, 43363601, 60155201, 67194401, 82870517, 85519337, 97924217, 100943201, 102004421, 104857391, 116090081, 128987429, 134696801, 135969401, 145348529]