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 | 5 |
3 | 51 |
4 | 264 |
5 | 19532 |
6 | -11904 |
7 | 1261296 |
8 | -2052864 |
9 | 70621632 |
10 | 24618221568 |
11 | 3996020736 |
12 | 743171562496 |
13 | 24567175118848 |
14 | -1257930752000 |
15 | 864893030400 |
16 | 12289833785344000 |
17 | 1099483729459478528 |
18 | 100515455071223808 |
19 | 757166323365314560 |
20 | 6294658173770137600 |
21 | 7801939905505132544 |