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 | 7 |
| 4 | 31 |
| 5 | 1393 |
| 6 | 5012 |
| 7 | 7649 |
| 8 | 50235 |
| 9 | 147296 |
| 10 | 426606 |
| 11 | 611769 |
| 12 | 3491681 |
| 13 | 9324642 |
| 14 | 11815109 |
| 15 | 53962364 |
| 16 | 82680301 |
| 17 | 96789197 |
| 18 | 230882246 |
| 19 | 378444764 |
| 20 | 1489280093 |
| 21 | 1489280606 |
| 22 | 3651325650 |
| 23 | 5891877914 |
| 24 | 5891877947 |
| 25 | 5891877966 |
| 26 | 58604540872 |