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 | 1 |
2 | 2 |
3 | 6 |
4 | 24 |
5 | 120 |
6 | 840 |
7 | 6720 |
8 | 60480 |
9 | 604800 |
10 | 6652800 |
11 | 83462400 |
12 | 1138233600 |
13 | 16746912000 |
14 | 264176640000 |
15 | 4444771968000 |
16 | 80719172352000 |
17 | 1556132497920000 |
18 | 31722198842880000 |
19 | 681437830993920000 |
20 | 15378172899747840000 |
21 | 366025806545817600000 |