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 | 4 |
4 | 16 |
5 | 80 |
6 | 400 |
7 | 2800 |
8 | 22400 |
9 | 181440 |
10 | 1814400 |
11 | 19958400 |
12 | 218803200 |
13 | 2844441600 |
14 | 39822182400 |
15 | 556972416000 |
16 | 8911558656000 |
17 | 151496497152000 |
18 | 2579172973977600 |
19 | 49004286505574400 |
20 | 980085730111488000 |
21 | 19584861165821952000 |
22 | 430866945648082944000 |