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 | 720 |
2 | 1413792 |
3 | 2940381648 |
4 | 6173789662504 |
5 | 12981179566917088 |
6 | 27297846037161958056 |
7 | 57403822541579269311072 |
8 | 120712076511505386344017520 |
9 | 253839841305922000782983605664 |
10 | 533787802709908480895773030991840 |
11 | 1122477022599575074944649300433060288 |