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) |
---|---|
9 | 1 |
10 | 90 |
11 | 5005 |
12 | 223740 |
13 | 8886735 |
14 | 329819490 |
15 | 11775438675 |
16 | 411859047600 |
17 | 14282642924550 |
18 | 495142102154700 |
19 | 17259324931198350 |
20 | 607418587742967000 |
21 | 21648370208790575250 |
22 | 783042495355599979500 |
23 | 28791389550204705674250 |