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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.

A102244 a(n) = exp(-1) * (n+1)! * Sum_{i>j>=0} j^n/i!.

Table of values

n a(n)
0 1
1 1
2 5
3 42
4 544
5 10020
6 246840
7 7790160
8 305234496
9 14493790080
10 818125056000
11 54040182134400
12 4122847701941760
13 359308852504842240
14 35434445974210483200
15 3922092526740740352000
16 483768942063738966835200
17 66076388642496229027430400
18 9938208084601523840431718400

List of values

[1, 1, 5, 42, 544, 10020, 246840, 7790160, 305234496, 14493790080, 818125056000, 54040182134400, 4122847701941760, 359308852504842240, 35434445974210483200, 3922092526740740352000, 483768942063738966835200, 66076388642496229027430400, 9938208084601523840431718400]

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

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