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.

A115917 Numbers k such that sigma(k) - phi(k) is a brilliant number (A078972).

Table of values

n a(n)
1 6
2 10
3 49
4 242
5 289
6 512
7 578
8 800
9 900
10 1250
11 2048
12 5041
13 15625
14 17424
15 22201
16 22472
17 26450
18 28900
19 48400
20 60025
21 62001
22 65536
23 69169
24 91592
25 131072
26 144722
27 146689
28 151321
29 160801
30 201601
31 212521
32 236196
33 242064
34 252050
35 253009

List of values

[6, 10, 49, 242, 289, 512, 578, 800, 900, 1250, 2048, 5041, 15625, 17424, 22201, 22472, 26450, 28900, 48400, 60025, 62001, 65536, 69169, 91592, 131072, 144722, 146689, 151321, 160801, 201601, 212521, 236196, 242064, 252050, 253009]

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

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