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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.

A096314 a(n) = Sum_{1<=k<=n, gcd(n,k)=1} (-1)^(n-k)*Stirling1(n,k).

Table of values

n a(n)
1 1
2 1
3 5
4 12
5 119
6 135
7 5039
8 20160
9 240219
10 1545075
11 39916799
12 88550154
13 6227020799
14 42798202447
15 698726730520
16 10461394944000
17 355687428095999
18 1375276302469251
19 121645100408831999
20 845066215769150100

List of values

[1, 1, 5, 12, 119, 135, 5039, 20160, 240219, 1545075, 39916799, 88550154, 6227020799, 42798202447, 698726730520, 10461394944000, 355687428095999, 1375276302469251, 121645100408831999, 845066215769150100]

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

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