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 | 10 |
3 | 312 |
4 | 19800 |
5 | 2112320 |
6 | 339721200 |
7 | 76736721600 |
8 | 23161613673856 |
9 | 9002333397657600 |
10 | 4378779743334796800 |
11 | 2605462349704907264000 |
12 | 1861650500340096385920000 |
13 | 1572904258939213777572323328 |
14 | 1551130967414603865237595648000 |
15 | 1765646154517023983944233381888000 |
16 | 2297658475440816396798100972400640000 |