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 | 14 |
| 3 | 135 |
| 4 | 1144 |
| 5 | 9083 |
| 6 | 69690 |
| 7 | 522781 |
| 8 | 3864524 |
| 9 | 28243251 |
| 10 | 204687550 |
| 11 | 1473038447 |
| 12 | 10542725976 |
| 13 | 75096139471 |
| 14 | 532846305962 |
| 15 | 3767808141891 |
| 16 | 26566180648012 |
| 17 | 186826646453453 |