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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.

A343898 a(n) = Sum_{k=0..n} (k!)^3 * binomial(n,k).

Table of values

n a(n)
0 1
1 2
2 11
3 244
4 14741
5 1799366
6 383827807
7 130673579576
8 66583061972009
9 48379301165408266
10 48265538214413425331
11 64129741094923528310012
12 110669722298686436099306941
13 242891356723607474283206170574
14 665950191893557715599111566813191
15 2246102991406652396042587363523672896

List of values

[1, 2, 11, 244, 14741, 1799366, 383827807, 130673579576, 66583061972009, 48379301165408266, 48265538214413425331, 64129741094923528310012, 110669722298686436099306941, 242891356723607474283206170574, 665950191893557715599111566813191, 2246102991406652396042587363523672896]

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

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