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.
n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 48 |
5 | 600 |
6 | 7920 |
7 | 108360 |
8 | 1693440 |
9 | 32114880 |
10 | 715478400 |
11 | 17616614400 |
12 | 467505561600 |
13 | 13438170345600 |
14 | 421361740800000 |
15 | 14345678194848000 |
16 | 524464774215782400 |
17 | 20420391682852761600 |
18 | 844038690729589555200 |
19 | 36981569420732192256000 |