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 | 900 |
| 2 | 11025 |
| 3 | 148225 |
| 4 | 1002001 |
| 5 | 5909761 |
| 6 | 17631601 |
| 7 | 55190041 |
| 8 | 160604929 |
| 9 | 427538329 |
| 10 | 1106427169 |
| 11 | 2211538729 |
| 12 | 4255083361 |
| 13 | 6865945321 |
| 14 | 11473194769 |
| 15 | 21599886961 |
| 16 | 36384418009 |
| 17 | 58145123689 |
| 18 | 84202691329 |
| 19 | 120590202121 |
| 20 | 167655034849 |
| 21 | 229116352921 |
| 22 | 340557446329 |
| 23 | 513428138521 |