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 | 6 |
3 | 180 |
4 | 1134000 |
5 | 3465651420000000 |
6 | 356414438712215830124178000000000000000 |
7 | 1311750338118625705168608107387873609070899443110750355586669940000000000000000000000000000000 |