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.

A218417 Numbers k for which sigma(k)/k - 7/9 is an integer.

Table of values

n a(n)
1 135
2 216
3 819
4 2678400
5 6780874383360
6 15298997575680
7 358160471832960
8 878948428037760
9 69640897897267200
10 27548836016065625124864000
11 114509071123027415138304000
12 204540330952262537736192000
13 32445066814696289084018688000
14 42000317261222229165905510400

List of values

[135, 216, 819, 2678400, 6780874383360, 15298997575680, 358160471832960, 878948428037760, 69640897897267200, 27548836016065625124864000, 114509071123027415138304000, 204540330952262537736192000, 32445066814696289084018688000, 42000317261222229165905510400]

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

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