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 | 3 |
3 | 11 |
4 | 50 |
5 | 274 |
6 | 1764 |
7 | 13132 |
8 | 118124 |
9 | 1172700 |
10 | 12753576 |
11 | 150917976 |
12 | 1931559552 |
13 | 26596717056 |
14 | 392156797824 |
15 | 6165817614720 |
16 | 102992244837120 |
17 | 1821602444624640 |
18 | 34012249593822720 |
19 | 668609730341153280 |
20 | 13803759753640704000 |
21 | 298631902863216384000 |