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 | 12 |
4 | 36 |
5 | 300 |
6 | 2520 |
7 | 20160 |
8 | 75600 |
9 | 2192400 |
10 | 30996000 |
11 | 276091200 |
12 | 2165486400 |
13 | 19070251200 |
14 | 968042275200 |
15 | 41954552640000 |
16 | 190974944160000 |
17 | 230641066656000 |
18 | 95607669148992000 |
19 | -2052972258809472000 |
20 | 22839078791168640000 |
21 | 5074390517301705600000 |