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 | 0 |
2 | 0 |
3 | 0 |
4 | 1 |
5 | 20 |
6 | 300 |
7 | 4200 |
8 | 58835 |
9 | 849240 |
10 | 12814200 |
11 | 203742000 |
12 | 3430355775 |
13 | 61363001700 |
14 | 1168815948300 |
15 | 23734579869000 |
16 | 513878948207625 |
17 | 11850279026586000 |
18 | 290440507342986000 |
19 | 7543064638441332000 |
20 | 206860683821114948625 |
21 | 5968372055889205462500 |