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 | 9 |
4 | 70 |
5 | 805 |
6 | 12480 |
7 | 245847 |
8 | 5909338 |
9 | 168310515 |
10 | 5556486450 |
11 | 209003251240 |
12 | 8835266400450 |
13 | 415094928861530 |
14 | 21473740362658640 |
15 | 1213683089969940075 |
16 | 74446121738526773490 |
17 | 4927385997649620215895 |
18 | 350145746700442604768346 |