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.

A339402 a(n) = denominator of (1/e)^n * Sum_{k>=0}(n^k*k^n)/(n!*k!).

Table of values

n a(n)
0 1
1 1
2 1
3 2
4 2
5 3
6 120
7 720
8 1008
9 40320
10 362880
11 45360
12 39916800
13 68428800
14 6227020800
15 87178291200
16 1307674368000
17 1046139494400
18 355687428096000
19 376610217984000
20 40548366802944000
21 2432902008176640000
22 5676771352412160000
23 40142883134914560000
24 25852016738884976640000

List of values

[1, 1, 1, 2, 2, 3, 120, 720, 1008, 40320, 362880, 45360, 39916800, 68428800, 6227020800, 87178291200, 1307674368000, 1046139494400, 355687428096000, 376610217984000, 40548366802944000, 2432902008176640000, 5676771352412160000, 40142883134914560000, 25852016738884976640000]