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) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 13 |
| 4 | 86 |
| 5 | 760 |
| 6 | 8518 |
| 7 | 116278 |
| 8 | 1911198 |
| 9 | 37063964 |
| 10 | 835779524 |
| 11 | 21626042510 |
| 12 | 635611172160 |
| 13 | 21033034941826 |
| 14 | 777710150809009 |