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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.

A334669 Denominator of Sum_{k=1..n} (-1)^(k+1)/k^7.

Table of values

n a(n)
1 1
2 128
3 279936
4 35831808
5 2799360000000
6 2799360000000
7 2305393332480000000
8 295090346557440000000
9 645362587921121280000000
10 645362587921121280000000
11 12576291107821424895098880000000
12 12576291107821424895098880000000
13 789143616376081512994335288360960000000

List of values

[1, 128, 279936, 35831808, 2799360000000, 2799360000000, 2305393332480000000, 295090346557440000000, 645362587921121280000000, 645362587921121280000000, 12576291107821424895098880000000, 12576291107821424895098880000000, 789143616376081512994335288360960000000]

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

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