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 | 2 |
3 | 6 |
4 | 90 |
5 | 6720 |
6 | 36960 |
7 | 11642400 |
8 | 283046400 |
9 | 2412984420000 |
10 | 1140422816332800 |
11 | 1226781977195174400 |
12 | 1863152400854384640000 |
13 | 5988092802221559085056000 |
14 | 112886540292742916603904000 |
15 | 158983195607776600998537600000000 |