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) |
---|---|
1 | 20 |
2 | -544 |
3 | 66560 |
4 | -17895424 |
5 | 8329625600 |
6 | -5937093935104 |
7 | 6004799480791040 |
8 | -8176700159200067584 |
9 | 14421891569272362106880 |
10 | -31983597922505761818148864 |
11 | 87107695717210805652024197120 |
12 | -285816431841945942589104606674944 |
13 | 1112035502745012017553352712530165760 |