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.

A259253 Primes of the form: 1 + sigma(n) + sigma(n)^2 + sigma(n)^3 + sigma(n)^4 + sigma(n)^5 + sigma(n)^6.

Table of values

n a(n)
1 7
2 1093
3 55987
4 5229043
5 8108731
6 917087137
7 47446779661
8 917087137
9 4201025641
10 31401724537
11 141276239497
12 3092313043
13 47446779661
14 31401724537
15 141276239497
16 654022685443
17 141276239497
18 141276239497
19 265462278481
20 47446779661
21 100343116693
22 4033516174507

List of values

[7, 1093, 55987, 5229043, 8108731, 917087137, 47446779661, 917087137, 4201025641, 31401724537, 141276239497, 3092313043, 47446779661, 31401724537, 141276239497, 654022685443, 141276239497, 141276239497, 265462278481, 47446779661, 100343116693, 4033516174507]

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

Content is available under The OEIS End-User License Agreement.