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.

A017705 Numerator of sum of -21st powers of divisors of n.

Table of values

n a(n)
1 1
2 2097153
3 10460353204
4 4398048608257
5 476837158203126
6 609360030634117
7 558545864083284008
8 9223376434903384065
9 109418989141972712413
10 500000238418580150139
11 7400249944258160101212
12 11501285462682212701357
13 247064529073450392704414
14 146419516812481413403653

List of values

[1, 2097153, 10460353204, 4398048608257, 476837158203126, 609360030634117, 558545864083284008, 9223376434903384065, 109418989141972712413, 500000238418580150139, 7400249944258160101212, 11501285462682212701357, 247064529073450392704414, 146419516812481413403653]

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

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