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.

A362838 a(n) = (-1)^n * n! * Sum_{k=0..floor(n/2)} n^(n-k) * Stirling1(n-k,k)/(n-k)!.

Table of values

n a(n)
0 1
1 0
2 4
3 27
4 704
5 26250
6 1573344
7 137145120
8 16494166016
9 2622125642472
10 532936224000000
11 134858889573071400
12 41584752648545107968
13 15351240982641183631440
14 6684412762278362097401856
15 3390180844777789569609375000
16 1981175610959755697378851553280

List of values

[1, 0, 4, 27, 704, 26250, 1573344, 137145120, 16494166016, 2622125642472, 532936224000000, 134858889573071400, 41584752648545107968, 15351240982641183631440, 6684412762278362097401856, 3390180844777789569609375000, 1981175610959755697378851553280]