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 | -480 |
2 | 168480 |
3 | -52199040 |
4 | 15119446560 |
5 | -4198347132480 |
6 | 1132514464199040 |
7 | -299116847254053120 |
8 | 77742157641008378400 |
9 | -19951615350261029163360 |
10 | 5068304275307482667436480 |
11 | -1276700988345016720650917760 |