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 | 2 |
2 | 10 |
3 | 60 |
4 | 492 |
5 | 4920 |
6 | 59160 |
7 | 828240 |
8 | 13253520 |
9 | 238563360 |
10 | 4771297440 |
11 | 104968543680 |
12 | 2519245713600 |
13 | 65500388553600 |
14 | 1834010896798080 |
15 | 55020326903942400 |
16 | 1760650461445075200 |
17 | 59862115689132556800 |
18 | 2155036164826415270400 |
19 | 81891374263403780275200 |