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 | 6 |
3 | 9 |
4 | 312 |
5 | 1530 |
6 | 47952 |
7 | 468720 |
8 | 15273696 |
9 | 238738752 |
10 | 8404102080 |
11 | 185234979600 |
12 | 7145001364608 |
13 | 204957002147040 |
14 | 8705298805015680 |
15 | 307822476591957600 |
16 | 14400927608439260160 |
17 | 604208707715034777600 |
18 | 31065769175985079142400 |
19 | 1504405685073556864627200 |