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.

A293623 Fermat pseudoprimes to base 2 that are pentagonal.

Table of values

n a(n)
1 7957
2 241001
3 1419607
4 1830985
5 1993537
6 2134277
7 2163001
8 2491637
9 2977217
10 4864501
11 5351537
12 6952037
13 10084177
14 11367137
15 11433301
16 14609401
17 21306157
18 22591301
19 26470501
20 26977001
21 29581501
22 35851037
23 44731051
24 46517857
25 53154337
26 55318957
27 55610837

List of values

[7957, 241001, 1419607, 1830985, 1993537, 2134277, 2163001, 2491637, 2977217, 4864501, 5351537, 6952037, 10084177, 11367137, 11433301, 14609401, 21306157, 22591301, 26470501, 26977001, 29581501, 35851037, 44731051, 46517857, 53154337, 55318957, 55610837]