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 | 0 |
2 | 2 |
3 | 6 |
4 | 36 |
5 | 250 |
6 | 1744 |
7 | 18312 |
8 | 158960 |
9 | 2046672 |
10 | 23152216 |
11 | 332066240 |
12 | 4628867680 |
13 | 75851021376 |
14 | 1225796994720 |
15 | 22407297808560 |
16 | 420285940934912 |
17 | 8427749606274560 |
18 | 177279678667864320 |
19 | 3930905732908421376 |
20 | 91016443490231306112 |
21 | 2210008179756128156160 |
22 | 55958663509700641300736 |