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 | 4 |
| 2 | 9 |
| 3 | 604 |
| 4 | 1849 |
| 5 | 7123 |
| 6 | 29588 |
| 7 | 71056 |
| 8 | 317238 |
| 9 | 945414 |
| 10 | 1347895 |
| 11 | 3567705 |
| 12 | 4624025 |
| 13 | 8518502 |
| 14 | 1523051853 |
| 15 | 4353560959 |
| 16 | 7537630621 |
| 17 | 24916885136 |
| 18 | 41483524658 |
| 19 | 513849020166 |
| 20 | 1021228997529 |
| 21 | 1137756574012 |
| 22 | 1185967711155 |
| 23 | 1581191501535 |
| 24 | 1705826324526 |