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 | 2 |
| 3 | 3 |
| 4 | 9 |
| 5 | 48 |
| 6 | 119 |
| 7 | 269 |
| 8 | 2740 |
| 9 | 5218 |
| 10 | 24319 |
| 11 | 42150 |
| 12 | 792335 |
| 13 | 4513067 |
| 14 | 54782479 |
| 15 | 101527454 |
| 16 | 2489565187 |
| 17 | 204017663873 |
| 18 | 2328040254212 |
| 19 | 26770510056270 |
| 20 | 60003612992726 |
| 21 | 246161422312909 |
| 22 | 2017680047306542 |
| 23 | 498466688538984687 |
| 24 | 7548204089604377821 |
| 25 | 705600340631647816172 |
| 26 | 26237144094556522735561 |