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 | 72 |
2 | 18360 |
3 | 5920200 |
4 | 2118223800 |
5 | 803927196072 |
6 | 316938365223480 |
7 | 128313095514575400 |
8 | 52976845635264939960 |
9 | 22204947580777261872000 |
10 | 9418997650746914743158360 |
11 | 4034374193416822645489549632 |
12 | 1741969558937890710303111545400 |