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 | 1 |
2 | -10 |
3 | 330 |
4 | -21960 |
5 | 2551640 |
6 | -461930274 |
7 | 120572270007 |
8 | -42930583856160 |
9 | 20008932768992430 |
10 | -11825788272679695050 |
11 | 8643081649999714376976 |
12 | -7654102744143874729100040 |
13 | 8076084821027629176909996013 |
14 | -10010473694454865001226770534530 |
15 | 14402393216408406872433735669683370 |