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.

A337032 a(n) = (n*sigma_9(n) - tau(n))/7 = (A282254(n) - A000594(n))/7, where tau is Ramanujan's tau, sigma_9(n) = Sum_{d divides n} d^9.

Table of values

n a(n)
1 0
2 150
3 8400
4 150300
5 1394400
6 8656200
7 40356000
8 153679800
9 498153600
10 1431378900
11 3705270000
12 8863150800
13 19694152800
14 41402744400
15 82382680800
16 157380332400
17 288000115200
18 511088547150
19 875865085200
20 1465721632200
21 2382961862400
22 3801687211800
23 5918070367200
24 9075809181600

List of values

[0, 150, 8400, 150300, 1394400, 8656200, 40356000, 153679800, 498153600, 1431378900, 3705270000, 8863150800, 19694152800, 41402744400, 82382680800, 157380332400, 288000115200, 511088547150, 875865085200, 1465721632200, 2382961862400, 3801687211800, 5918070367200, 9075809181600]

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

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