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 | 8 |
| 2 | 98 |
| 3 | 363 |
| 4 | 1723 |
| 5 | 16265 |
| 6 | 89121 |
| 7 | 532511 |
| 8 | 4281120 |
| 9 | 26823700 |
| 10 | 176193198 |
| 11 | 1287161045 |
| 12 | 8543705276 |
| 13 | 58177418523 |
| 14 | 410055506135 |
| 15 | 2784959794292 |
| 16 | 19190983835759 |
| 17 | 133544369858762 |
| 18 | 915736969076289 |
| 19 | 6331727880485698 |
| 20 | 43862835910755482 |