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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.

A066989 a(n) = (n!)^3 * Sum_{i=1..n} 1/i^3.

Table of values

n a(n)
1 1
2 9
3 251
4 16280
5 2048824
6 444273984
7 152759224512
8 78340747014144
9 57175952894078976
10 57223737619918848000
11 76212579497951858688000
12 131758938842553681444864000
13 289584291977410916858462208000
14 794860754824699647616459210752000

List of values

[1, 9, 251, 16280, 2048824, 444273984, 152759224512, 78340747014144, 57175952894078976, 57223737619918848000, 76212579497951858688000, 131758938842553681444864000, 289584291977410916858462208000, 794860754824699647616459210752000]

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

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