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.

A321294 a(n) = Sum_{d|n} mu(n/d)*d*sigma_n(d).

Table of values

n a(n)
1 1
2 9
3 83
4 1058
5 15629
6 282381
7 5764807
8 134480900
9 3486902505
10 100048836321
11 3138428376731
12 107006403495850
13 3937376385699301
14 155572843119518781
15 6568408661060858767
16 295150157013526773768
17 14063084452067724991025
18 708236697425777157039381

List of values

[1, 9, 83, 1058, 15629, 282381, 5764807, 134480900, 3486902505, 100048836321, 3138428376731, 107006403495850, 3937376385699301, 155572843119518781, 6568408661060858767, 295150157013526773768, 14063084452067724991025, 708236697425777157039381]

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

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