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 | 14 |
| 4 | 112 |
| 5 | 1095 |
| 6 | 13009 |
| 7 | 175865 |
| 8 | 2647438 |
| 9 | 43347498 |
| 10 | 760869739 |
| 11 | 14150265025 |
| 12 | 276374334318 |
| 13 | 5629364791202 |